diff --git a/nsprpub/TAG-INFO b/nsprpub/TAG-INFO
index 59d87097c71f1..778801bb9c91e 100644
--- a/nsprpub/TAG-INFO
+++ b/nsprpub/TAG-INFO
@@ -1 +1 @@
-NSPR_4_9_5_RTM
+NSPR_4_9_6_BETA1
diff --git a/nsprpub/config/prdepend.h b/nsprpub/config/prdepend.h
index e49e92677e3eb..6c66b37ca0fc7 100644
--- a/nsprpub/config/prdepend.h
+++ b/nsprpub/config/prdepend.h
@@ -10,3 +10,4 @@
  */
 
 #error "Do not include this header file."
+
diff --git a/nsprpub/configure b/nsprpub/configure
index 5348f5c0bb891..29c861a04a055 100755
--- a/nsprpub/configure
+++ b/nsprpub/configure
@@ -19,7 +19,7 @@ ac_help="$ac_help
                           location of the Android toolchain"
 ac_help="$ac_help
   --with-android-version=VER
-                          Android platform version, default 5"
+                          Android platform version, default 5 for arm, 9 for x86/mips"
 ac_help="$ac_help
   --with-android-platform=DIR
                           location of platform dir"
@@ -736,7 +736,7 @@ test "$host_alias" != "$target_alias" &&
 
 MOD_MAJOR_VERSION=4
 MOD_MINOR_VERSION=9
-MOD_PATCH_VERSION=5
+MOD_PATCH_VERSION=6
 NSPR_MODNAME=nspr20
 _HAVE_PTHREADS=
 USE_PTHREADS=
@@ -857,12 +857,19 @@ if test "${with_android_toolchain+set}" = set; then
 fi
 
 
+case "$target_cpu" in
+arm)
+    android_version=5
+    ;;
+i?86|mipsel)
+    android_version=9
+    ;;
+esac
+
 # Check whether --with-android-version or --without-android-version was given.
 if test "${with_android_version+set}" = set; then
   withval="$with_android_version"
   android_version=$withval
-else
-  android_version=5
 fi
 
 
@@ -924,7 +931,7 @@ case "$target" in
 
     if test -z "$android_toolchain" ; then
         echo $ac_n "checking for android toolchain directory""... $ac_c" 1>&6
-echo "configure:928: checking for android toolchain directory" >&5
+echo "configure:935: checking for android toolchain directory" >&5
 
         kernel_name=`uname -s | tr "[:upper:]" "[:lower:]"`
 
@@ -950,7 +957,7 @@ echo "configure:928: checking for android toolchain directory" >&5
 
     if test -z "$android_platform" ; then
         echo $ac_n "checking for android platform directory""... $ac_c" 1>&6
-echo "configure:954: checking for android platform directory" >&5
+echo "configure:961: checking for android platform directory" >&5
 
         case "$target_cpu" in
         arm)
@@ -1312,7 +1319,7 @@ if test -z "$SKIP_PATH_CHECKS"; then
     # Extract the first word of "$WHOAMI whoami", so it can be a program name with args.
 set dummy $WHOAMI whoami; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1316: checking for $ac_word" >&5
+echo "configure:1323: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_WHOAMI'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1384,13 +1391,13 @@ if test "$target" != "$host" -o -n "$CROSS_COMPILE"; then
     _SAVE_LDFLAGS="$LDFLAGS"
 
     echo $ac_n "checking for $host compiler""... $ac_c" 1>&6
-echo "configure:1388: checking for $host compiler" >&5
+echo "configure:1395: checking for $host compiler" >&5
     for ac_prog in $HOST_CC gcc cc /usr/ucb/cc
 do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1394: checking for $ac_word" >&5
+echo "configure:1401: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_HOST_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1436,16 +1443,16 @@ test -n "$HOST_CC" || HOST_CC=""""
     LDFLAGS="$HOST_LDFLAGS"
 
     echo $ac_n "checking whether the $host compiler ($HOST_CC $HOST_CFLAGS $HOST_LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:1440: checking whether the $host compiler ($HOST_CC $HOST_CFLAGS $HOST_LDFLAGS) works" >&5
+echo "configure:1447: checking whether the $host compiler ($HOST_CC $HOST_CFLAGS $HOST_LDFLAGS) works" >&5
     cat > conftest.$ac_ext <<EOF
-#line 1442 "configure"
+#line 1449 "configure"
 #include "confdefs.h"
 
 int main() {
 return(0);
 ; return 0; }
 EOF
-if { (eval echo configure:1449: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1456: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_prog_host_cc_works=1 echo "$ac_t""yes" 1>&6
 else
@@ -1480,7 +1487,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1484: checking for $ac_word" >&5
+echo "configure:1491: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1514,7 +1521,7 @@ test -n "$CC" || CC="echo"
     # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1518: checking for $ac_word" >&5
+echo "configure:1525: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1544,7 +1551,7 @@ if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1548: checking for $ac_word" >&5
+echo "configure:1555: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1595,7 +1602,7 @@ fi
       # Extract the first word of "cl", so it can be a program name with args.
 set dummy cl; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1599: checking for $ac_word" >&5
+echo "configure:1606: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1627,7 +1634,7 @@ fi
 fi
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:1631: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:1638: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1638,12 +1645,12 @@ cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 1642 "configure"
+#line 1649 "configure"
 #include "confdefs.h"
 
 main(){return(0);}
 EOF
-if { (eval echo configure:1647: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1654: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -1669,12 +1676,12 @@ if test $ac_cv_prog_cc_works = no; then
   { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:1673: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:1680: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:1678: checking whether we are using GNU C" >&5
+echo "configure:1685: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1683,7 +1690,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1687: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1694: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -1702,7 +1709,7 @@ ac_test_CFLAGS="${CFLAGS+set}"
 ac_save_CFLAGS="$CFLAGS"
 CFLAGS=
 echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:1706: checking whether ${CC-cc} accepts -g" >&5
+echo "configure:1713: checking whether ${CC-cc} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1739,7 +1746,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1743: checking for $ac_word" >&5
+echo "configure:1750: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CXX'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1775,7 +1782,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1779: checking for $ac_word" >&5
+echo "configure:1786: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CXX'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1807,7 +1814,7 @@ test -n "$CXX" || CXX="gcc"
 
 
 echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:1811: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works" >&5
+echo "configure:1818: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works" >&5
 
 ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1818,12 +1825,12 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 1822 "configure"
+#line 1829 "configure"
 #include "confdefs.h"
 
 int main(){return(0);}
 EOF
-if { (eval echo configure:1827: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1834: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cxx_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -1849,12 +1856,12 @@ if test $ac_cv_prog_cxx_works = no; then
   { echo "configure: error: installation or configuration problem: C++ compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:1853: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:1860: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cxx_cross" 1>&6
 cross_compiling=$ac_cv_prog_cxx_cross
 
 echo $ac_n "checking whether we are using GNU C++""... $ac_c" 1>&6
-echo "configure:1858: checking whether we are using GNU C++" >&5
+echo "configure:1865: checking whether we are using GNU C++" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gxx'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1863,7 +1870,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CXX-g++} -E conftest.C'; { (eval echo configure:1867: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CXX-g++} -E conftest.C'; { (eval echo configure:1874: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gxx=yes
 else
   ac_cv_prog_gxx=no
@@ -1882,7 +1889,7 @@ ac_test_CXXFLAGS="${CXXFLAGS+set}"
 ac_save_CXXFLAGS="$CXXFLAGS"
 CXXFLAGS=
 echo $ac_n "checking whether ${CXX-g++} accepts -g""... $ac_c" 1>&6
-echo "configure:1886: checking whether ${CXX-g++} accepts -g" >&5
+echo "configure:1893: checking whether ${CXX-g++} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cxx_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1927,7 +1934,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1931: checking for $ac_word" >&5
+echo "configure:1938: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1962,7 +1969,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1966: checking for $ac_word" >&5
+echo "configure:1973: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AR'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1997,7 +2004,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2001: checking for $ac_word" >&5
+echo "configure:2008: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AS'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2032,7 +2039,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2036: checking for $ac_word" >&5
+echo "configure:2043: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_LD'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2067,7 +2074,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2071: checking for $ac_word" >&5
+echo "configure:2078: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_STRIP'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2102,7 +2109,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2106: checking for $ac_word" >&5
+echo "configure:2113: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_WINDRES'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2137,7 +2144,7 @@ else
     # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2141: checking for $ac_word" >&5
+echo "configure:2148: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2167,7 +2174,7 @@ if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2171: checking for $ac_word" >&5
+echo "configure:2178: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2218,7 +2225,7 @@ fi
       # Extract the first word of "cl", so it can be a program name with args.
 set dummy cl; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2222: checking for $ac_word" >&5
+echo "configure:2229: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2250,7 +2257,7 @@ fi
 fi
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:2254: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:2261: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -2261,12 +2268,12 @@ cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 2265 "configure"
+#line 2272 "configure"
 #include "confdefs.h"
 
 main(){return(0);}
 EOF
-if { (eval echo configure:2270: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2277: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -2292,12 +2299,12 @@ if test $ac_cv_prog_cc_works = no; then
   { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:2296: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:2303: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:2301: checking whether we are using GNU C" >&5
+echo "configure:2308: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2306,7 +2313,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:2310: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:2317: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -2325,7 +2332,7 @@ ac_test_CFLAGS="${CFLAGS+set}"
 ac_save_CFLAGS="$CFLAGS"
 CFLAGS=
 echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:2329: checking whether ${CC-cc} accepts -g" >&5
+echo "configure:2336: checking whether ${CC-cc} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2365,7 +2372,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2369: checking for $ac_word" >&5
+echo "configure:2376: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CXX'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2397,7 +2404,7 @@ test -n "$CXX" || CXX="gcc"
 
 
 echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:2401: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works" >&5
+echo "configure:2408: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works" >&5
 
 ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -2408,12 +2415,12 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 2412 "configure"
+#line 2419 "configure"
 #include "confdefs.h"
 
 int main(){return(0);}
 EOF
-if { (eval echo configure:2417: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2424: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cxx_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -2439,12 +2446,12 @@ if test $ac_cv_prog_cxx_works = no; then
   { echo "configure: error: installation or configuration problem: C++ compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:2443: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:2450: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cxx_cross" 1>&6
 cross_compiling=$ac_cv_prog_cxx_cross
 
 echo $ac_n "checking whether we are using GNU C++""... $ac_c" 1>&6
-echo "configure:2448: checking whether we are using GNU C++" >&5
+echo "configure:2455: checking whether we are using GNU C++" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gxx'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2453,7 +2460,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CXX-g++} -E conftest.C'; { (eval echo configure:2457: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CXX-g++} -E conftest.C'; { (eval echo configure:2464: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gxx=yes
 else
   ac_cv_prog_gxx=no
@@ -2472,7 +2479,7 @@ ac_test_CXXFLAGS="${CXXFLAGS+set}"
 ac_save_CXXFLAGS="$CXXFLAGS"
 CXXFLAGS=
 echo $ac_n "checking whether ${CXX-g++} accepts -g""... $ac_c" 1>&6
-echo "configure:2476: checking whether ${CXX-g++} accepts -g" >&5
+echo "configure:2483: checking whether ${CXX-g++} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cxx_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2506,7 +2513,7 @@ fi
         fi
     fi
     echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:2510: checking how to run the C preprocessor" >&5
+echo "configure:2517: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -2521,13 +2528,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 2525 "configure"
+#line 2532 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2531: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2538: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -2538,13 +2545,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 2542 "configure"
+#line 2549 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2548: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2555: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -2555,13 +2562,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -nologo -E"
   cat > conftest.$ac_ext <<EOF
-#line 2559 "configure"
+#line 2566 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2565: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2572: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -2588,7 +2595,7 @@ echo "$ac_t""$CPP" 1>&6
     # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2592: checking for $ac_word" >&5
+echo "configure:2599: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2620,7 +2627,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2624: checking for $ac_word" >&5
+echo "configure:2631: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_AS'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2661,7 +2668,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2665: checking for $ac_word" >&5
+echo "configure:2672: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_AR'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2702,7 +2709,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2706: checking for $ac_word" >&5
+echo "configure:2713: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_LD'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2743,7 +2750,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2747: checking for $ac_word" >&5
+echo "configure:2754: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_STRIP'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2784,7 +2791,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2788: checking for $ac_word" >&5
+echo "configure:2795: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_WINDRES'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2852,7 +2859,7 @@ else
 fi
 
 echo $ac_n "checking for gcc -pipe support""... $ac_c" 1>&6
-echo "configure:2856: checking for gcc -pipe support" >&5
+echo "configure:2863: checking for gcc -pipe support" >&5
 if test -n "$GNU_CC" && test -n "$GNU_CXX" && test -n "$GNU_AS"; then
     echo '#include <stdio.h>' > dummy-hello.c
     echo 'int main() { printf("Hello World\n"); return 0; }' >> dummy-hello.c
@@ -2867,14 +2874,14 @@ if test -n "$GNU_CC" && test -n "$GNU_CXX" && test -n "$GNU_AS"; then
         _SAVE_CFLAGS=$CFLAGS
         CFLAGS="$CFLAGS -pipe"
         cat > conftest.$ac_ext <<EOF
-#line 2871 "configure"
+#line 2878 "configure"
 #include "confdefs.h"
  #include <stdio.h> 
 int main() {
 printf("Hello World\n");
 ; return 0; }
 EOF
-if { (eval echo configure:2878: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2885: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   _res_gcc_pipe="yes"
 else
@@ -2904,16 +2911,16 @@ _SAVE_CFLAGS="$CFLAGS"
 CFLAGS="$CFLAGS -fprofile-generate -fprofile-correction"
 
 echo $ac_n "checking whether C compiler supports -fprofile-generate""... $ac_c" 1>&6
-echo "configure:2908: checking whether C compiler supports -fprofile-generate" >&5
+echo "configure:2915: checking whether C compiler supports -fprofile-generate" >&5
 cat > conftest.$ac_ext <<EOF
-#line 2910 "configure"
+#line 2917 "configure"
 #include "confdefs.h"
 
 int main() {
 return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:2917: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2924: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
    PROFILE_GEN_CFLAGS="-fprofile-generate"
                  result="yes" 
@@ -2936,7 +2943,7 @@ CFLAGS="$_SAVE_CFLAGS"
 
 if test "$GNU_CC"; then
     echo $ac_n "checking for visibility(hidden) attribute""... $ac_c" 1>&6
-echo "configure:2940: checking for visibility(hidden) attribute" >&5
+echo "configure:2947: checking for visibility(hidden) attribute" >&5
 if eval "test \"`echo '$''{'ac_cv_visibility_hidden'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2960,7 +2967,7 @@ echo "$ac_t""$ac_cv_visibility_hidden" 1>&6
 EOF
 
         echo $ac_n "checking for visibility pragma support""... $ac_c" 1>&6
-echo "configure:2964: checking for visibility pragma support" >&5
+echo "configure:2971: checking for visibility pragma support" >&5
 if eval "test \"`echo '$''{'ac_cv_visibility_pragma'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3013,7 +3020,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:3017: checking for $ac_word" >&5
+echo "configure:3024: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_PERL'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3335,14 +3342,14 @@ no)
     _SAVE_CFLAGS="$CFLAGS"
     CFLAGS="$arch_flag"
     cat > conftest.$ac_ext <<EOF
-#line 3339 "configure"
+#line 3346 "configure"
 #include "confdefs.h"
 
 int main() {
 return sizeof(__thumb2__);
 ; return 0; }
 EOF
-if { (eval echo configure:3346: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3353: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   MOZ_THUMB2=1
 else
@@ -3404,16 +3411,16 @@ if test -n "$all_flags"; then
     _SAVE_CFLAGS="$CFLAGS"
     CFLAGS="$all_flags"
     echo $ac_n "checking whether the chosen combination of compiler flags ($all_flags) works""... $ac_c" 1>&6
-echo "configure:3408: checking whether the chosen combination of compiler flags ($all_flags) works" >&5
+echo "configure:3415: checking whether the chosen combination of compiler flags ($all_flags) works" >&5
     cat > conftest.$ac_ext <<EOF
-#line 3410 "configure"
+#line 3417 "configure"
 #include "confdefs.h"
 
 int main() {
 return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:3417: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3424: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 else
@@ -3470,17 +3477,17 @@ EOF
     DSO_LDOPTS='-brtl -bnortllib -bM:SRE -bnoentry -bexpall -blibpath:/usr/lib:/lib'
     ac_safe=`echo "sys/atomic_op.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for sys/atomic_op.h""... $ac_c" 1>&6
-echo "configure:3474: checking for sys/atomic_op.h" >&5
+echo "configure:3481: checking for sys/atomic_op.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3479 "configure"
+#line 3486 "configure"
 #include "confdefs.h"
 #include <sys/atomic_op.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:3484: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:3491: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -3637,7 +3644,7 @@ EOF
         _DEBUG_FLAGS='-gdwarf-2 -O0'
         MKSHLIB='$(CCC) $(DSO_LDOPTS) -o $@'
         echo $ac_n "checking for gethostbyaddr in -lbind""... $ac_c" 1>&6
-echo "configure:3641: checking for gethostbyaddr in -lbind" >&5
+echo "configure:3648: checking for gethostbyaddr in -lbind" >&5
 ac_lib_var=`echo bind'_'gethostbyaddr | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -3645,7 +3652,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lbind  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3649 "configure"
+#line 3656 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -3656,7 +3663,7 @@ int main() {
 gethostbyaddr()
 ; return 0; }
 EOF
-if { (eval echo configure:3660: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3667: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -3865,17 +3872,17 @@ EOF
     fi
     ac_safe=`echo "crt_externs.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for crt_externs.h""... $ac_c" 1>&6
-echo "configure:3869: checking for crt_externs.h" >&5
+echo "configure:3876: checking for crt_externs.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3874 "configure"
+#line 3881 "configure"
 #include "confdefs.h"
 #include <crt_externs.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:3879: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:3886: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -4919,17 +4926,17 @@ EOF
         _OPTIMIZE_FLAGS="$_OPTIMIZE_FLAGS -Olimit 4000"
         ac_safe=`echo "machine/builtins.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for machine/builtins.h""... $ac_c" 1>&6
-echo "configure:4923: checking for machine/builtins.h" >&5
+echo "configure:4930: checking for machine/builtins.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4928 "configure"
+#line 4935 "configure"
 #include "confdefs.h"
 #include <machine/builtins.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4933: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4940: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -5488,7 +5495,7 @@ case $target in
     ;;
 *)
     echo $ac_n "checking for dlopen in -ldl""... $ac_c" 1>&6
-echo "configure:5492: checking for dlopen in -ldl" >&5
+echo "configure:5499: checking for dlopen in -ldl" >&5
 ac_lib_var=`echo dl'_'dlopen | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5496,7 +5503,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5500 "configure"
+#line 5507 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -5507,7 +5514,7 @@ int main() {
 dlopen()
 ; return 0; }
 EOF
-if { (eval echo configure:5511: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5518: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5524,17 +5531,17 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   ac_safe=`echo "dlfcn.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for dlfcn.h""... $ac_c" 1>&6
-echo "configure:5528: checking for dlfcn.h" >&5
+echo "configure:5535: checking for dlfcn.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5533 "configure"
+#line 5540 "configure"
 #include "confdefs.h"
 #include <dlfcn.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5538: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5545: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -5567,13 +5574,13 @@ esac
 
 if test $ac_cv_prog_gcc = yes; then
     echo $ac_n "checking whether ${CC-cc} needs -traditional""... $ac_c" 1>&6
-echo "configure:5571: checking whether ${CC-cc} needs -traditional" >&5
+echo "configure:5578: checking whether ${CC-cc} needs -traditional" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc_traditional'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
     ac_pattern="Autoconf.*'x'"
   cat > conftest.$ac_ext <<EOF
-#line 5577 "configure"
+#line 5584 "configure"
 #include "confdefs.h"
 #include <sgtty.h>
 Autoconf TIOCGETP
@@ -5591,7 +5598,7 @@ rm -f conftest*
 
   if test $ac_cv_prog_gcc_traditional = no; then
     cat > conftest.$ac_ext <<EOF
-#line 5595 "configure"
+#line 5602 "configure"
 #include "confdefs.h"
 #include <termio.h>
 Autoconf TCGETA
@@ -5617,12 +5624,12 @@ LIBS="$LIBS $OS_LIBS"
 for ac_func in lchown strerror dladdr
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:5621: checking for $ac_func" >&5
+echo "configure:5628: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5626 "configure"
+#line 5633 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -5645,7 +5652,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5649: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5656: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -5697,7 +5704,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:5701: checking for $ac_word" >&5
+echo "configure:5708: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_CCACHE'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5756,7 +5763,7 @@ hpux*)
 if test -z "$GNU_CC"; then
 
     echo $ac_n "checking for +Olit support""... $ac_c" 1>&6
-echo "configure:5760: checking for +Olit support" >&5
+echo "configure:5767: checking for +Olit support" >&5
 if eval "test \"`echo '$''{'ac_cv_hpux_usable_olit_option'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5798,7 +5805,7 @@ wince*)
 *)
     
 echo $ac_n "checking for pthread_create in -lpthreads""... $ac_c" 1>&6
-echo "configure:5802: checking for pthread_create in -lpthreads" >&5
+echo "configure:5809: checking for pthread_create in -lpthreads" >&5
 echo "
     #include <pthread.h> 
     void *foo(void *v) { return v; } 
@@ -5820,7 +5827,7 @@ echo "
         echo "$ac_t""no" 1>&6
         
 echo $ac_n "checking for pthread_create in -lpthread""... $ac_c" 1>&6
-echo "configure:5824: checking for pthread_create in -lpthread" >&5
+echo "configure:5831: checking for pthread_create in -lpthread" >&5
 echo "
     #include <pthread.h> 
     void *foo(void *v) { return v; } 
@@ -5842,7 +5849,7 @@ echo "
         echo "$ac_t""no" 1>&6
         
 echo $ac_n "checking for pthread_create in -lc_r""... $ac_c" 1>&6
-echo "configure:5846: checking for pthread_create in -lc_r" >&5
+echo "configure:5853: checking for pthread_create in -lc_r" >&5
 echo "
     #include <pthread.h> 
     void *foo(void *v) { return v; } 
@@ -5864,7 +5871,7 @@ echo "
         echo "$ac_t""no" 1>&6
         
 echo $ac_n "checking for pthread_create in -lc""... $ac_c" 1>&6
-echo "configure:5868: checking for pthread_create in -lc" >&5
+echo "configure:5875: checking for pthread_create in -lc" >&5
 echo "
     #include <pthread.h> 
     void *foo(void *v) { return v; } 
@@ -5982,7 +5989,7 @@ if test -n "$USE_PTHREADS"; then
       rm -f conftest*
    ac_cv_have_dash_pthread=no
    echo $ac_n "checking whether ${CC-cc} accepts -pthread""... $ac_c" 1>&6
-echo "configure:5986: checking whether ${CC-cc} accepts -pthread" >&5
+echo "configure:5993: checking whether ${CC-cc} accepts -pthread" >&5
    echo 'int main() { return 0; }' | cat > conftest.c
    ${CC-cc} -pthread -o conftest conftest.c > conftest.out 2>&1
    if test $? -eq 0; then
@@ -6005,7 +6012,7 @@ echo "configure:5986: checking whether ${CC-cc} accepts -pthread" >&5
 			    ac_cv_have_dash_pthreads=no
     if test "$ac_cv_have_dash_pthread" = "no"; then
 	    echo $ac_n "checking whether ${CC-cc} accepts -pthreads""... $ac_c" 1>&6
-echo "configure:6009: checking whether ${CC-cc} accepts -pthreads" >&5
+echo "configure:6016: checking whether ${CC-cc} accepts -pthreads" >&5
     	echo 'int main() { return 0; }' | cat > conftest.c
 	    ${CC-cc} -pthreads -o conftest conftest.c > conftest.out 2>&1
     	if test $? -eq 0; then
diff --git a/nsprpub/configure.in b/nsprpub/configure.in
index 079ed871a9b0e..f6992ea864073 100644
--- a/nsprpub/configure.in
+++ b/nsprpub/configure.in
@@ -15,7 +15,7 @@ dnl = Defaults
 dnl ========================================================
 MOD_MAJOR_VERSION=4
 MOD_MINOR_VERSION=9
-MOD_PATCH_VERSION=5
+MOD_PATCH_VERSION=6
 NSPR_MODNAME=nspr20
 _HAVE_PTHREADS=
 USE_PTHREADS=
@@ -111,11 +111,20 @@ AC_ARG_WITH(android-toolchain,
                           location of the Android toolchain],
     android_toolchain=$withval)
 
+dnl The default android_version is different for each target cpu.
+case "$target_cpu" in
+arm)
+    android_version=5
+    ;;
+i?86|mipsel)
+    android_version=9
+    ;;
+esac
+
 AC_ARG_WITH(android-version,
 [  --with-android-version=VER
-                          Android platform version, default 5],
-    android_version=$withval,
-    android_version=5)
+                          Android platform version, default 5 for arm, 9 for x86/mips],
+    android_version=$withval)
 
 AC_ARG_WITH(android-platform,
 [  --with-android-platform=DIR
diff --git a/nsprpub/lib/ds/plarena.c b/nsprpub/lib/ds/plarena.c
index 5b1e53af1f932..cc2ffb00a89c6 100644
--- a/nsprpub/lib/ds/plarena.c
+++ b/nsprpub/lib/ds/plarena.c
@@ -345,6 +345,22 @@ PR_IMPLEMENT(void) PL_ArenaFinish(void)
     once = pristineCallOnce;
 }
 
+PR_IMPLEMENT(size_t) PL_SizeOfArenaPoolExcludingPool(
+    PLArenaPool *pool, PLMallocSizeFn mallocSizeOf)
+{
+    /*
+     * The first PLArena is within |pool|, so don't measure it.  Subsequent
+     * PLArenas are separate and must measured.
+     */
+    size_t size = 0;
+    PLArena *arena = pool->first.next;
+    while (arena) {
+        size += mallocSizeOf(arena);
+        arena = arena->next;
+    }
+    return size;
+}
+
 #ifdef PL_ARENAMETER
 PR_IMPLEMENT(void) PL_ArenaCountAllocation(PLArenaPool *pool, PRUint32 nb)
 {
diff --git a/nsprpub/lib/ds/plarenas.h b/nsprpub/lib/ds/plarenas.h
index b4705624318f5..4cbe32c4c39ef 100644
--- a/nsprpub/lib/ds/plarenas.h
+++ b/nsprpub/lib/ds/plarenas.h
@@ -60,6 +60,19 @@ PR_EXTERN(void) PL_ArenaRelease(PLArenaPool *pool, char *mark);
 */
 PR_EXTERN(void) PL_ClearArenaPool(PLArenaPool *pool, PRInt32 pattern);
 
+/*
+** A function like malloc_size() or malloc_usable_size() that returns the
+** size of a heap block.
+*/
+typedef size_t (*PLMallocSizeFn)(const void *ptr);
+
+/*
+** Return all memory used by a PLArenaPool, excluding the PLArenaPool
+** structure.
+*/
+PR_EXTERN(size_t) PL_SizeOfArenaPoolExcludingPool(
+    PLArenaPool *pool, PLMallocSizeFn mallocSizeOf);
+
 PR_END_EXTERN_C
 
 #endif /* PLARENAS_H */
diff --git a/nsprpub/lib/ds/plds.def b/nsprpub/lib/ds/plds.def
index 5c672abb3445f..cc54a4de2e771 100644
--- a/nsprpub/lib/ds/plds.def
+++ b/nsprpub/lib/ds/plds.def
@@ -54,3 +54,7 @@ PL_HashTableRawLookupConst;
 ;+    global:
 PL_ClearArenaPool;
 ;+} NSPR_4.1;
+;+NSPR_4.9.6 {
+;+    global:
+PL_SizeOfArenaPoolExcludingPool;
+;+} NSPR_4.8.5;
diff --git a/nsprpub/pr/include/md/_linux.cfg b/nsprpub/pr/include/md/_linux.cfg
index d0a3beeb12537..2fdbf63ee8449 100644
--- a/nsprpub/pr/include/md/_linux.cfg
+++ b/nsprpub/pr/include/md/_linux.cfg
@@ -590,6 +590,59 @@
 #define PR_BYTES_PER_WORD_LOG2   2
 #define PR_BYTES_PER_DWORD_LOG2  3
 
+#elif defined(__aarch64__)
+
+#ifdef __AARCH64EB__
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#elif defined(__AARCH64EL__)
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#else
+#error "Unknown Aarch64 endianness."
+#endif
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
 #elif defined(__hppa__)
 
 #undef  IS_LITTLE_ENDIAN
diff --git a/nsprpub/pr/include/md/_linux.h b/nsprpub/pr/include/md/_linux.h
index 4992b7735076e..906822fb8416d 100644
--- a/nsprpub/pr/include/md/_linux.h
+++ b/nsprpub/pr/include/md/_linux.h
@@ -41,6 +41,8 @@
 #define _PR_SI_ARCHITECTURE "mips"
 #elif defined(__arm__)
 #define _PR_SI_ARCHITECTURE "arm"
+#elif defined(__aarch64__)
+#define _PR_SI_ARCHITECTURE "aarch64"
 #elif defined(__hppa__)
 #define _PR_SI_ARCHITECTURE "hppa"
 #elif defined(__s390x__)
@@ -63,6 +65,10 @@
 #define _MD_DEFAULT_STACK_SIZE	65536L
 #define _MD_MMAP_FLAGS          MAP_PRIVATE
 
+#if defined(__aarch64__)
+#define _MD_MINIMUM_STACK_SIZE  0x20000
+#endif
+
 #undef	HAVE_STACK_GROWING_UP
 
 /*
@@ -186,7 +192,7 @@ extern PRInt32 _PR_ppc_AtomicSet(PRInt32 *val, PRInt32 newval);
 })
 #endif
 
-#if defined(__arm__)
+#if defined(__arm__) || defined(__aarch64__)
 #if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
 /* Use GCC built-in functions */
 #define _PR_HAVE_ATOMIC_OPS
diff --git a/nsprpub/pr/include/md/_win95.h b/nsprpub/pr/include/md/_win95.h
index a919e3a02e650..3db340e3de49f 100644
--- a/nsprpub/pr/include/md/_win95.h
+++ b/nsprpub/pr/include/md/_win95.h
@@ -379,9 +379,9 @@ extern PROsfd _MD_Accept(PRFileDesc *fd, PRNetAddr *raddr, PRUint32 *rlen,
 
 /* --- Lock stuff --- */
 #define _PR_LOCK                      _MD_LOCK
-#define _PR_UNLOCK					  _MD_UNLOCK
+#define _PR_UNLOCK                    _MD_UNLOCK
 
-#define _MD_NEW_LOCK(lock)            (InitializeCriticalSection(&((lock)->mutex)),(lock)->notified.length=0,(lock)->notified.link=NULL,PR_SUCCESS)
+#define _MD_NEW_LOCK                  _PR_MD_NEW_LOCK
 #define _MD_FREE_LOCK(lock)           DeleteCriticalSection(&((lock)->mutex))
 #define _MD_LOCK(lock)                EnterCriticalSection(&((lock)->mutex))
 #define _MD_TEST_AND_LOCK(lock)       (EnterCriticalSection(&((lock)->mutex)),0)
@@ -499,7 +499,7 @@ extern DWORD _pr_currentCPUIndex;
 #define _PR_UnlockSched()                0
 
 /* --- Initialization stuff --- */
-#define _MD_INIT_LOCKS()
+#define _MD_INIT_LOCKS                   _PR_MD_INIT_LOCKS
 
 /* --- Stack stuff --- */
 #define _MD_INIT_STACK(stack, redzone)
diff --git a/nsprpub/pr/include/prinit.h b/nsprpub/pr/include/prinit.h
index bb1ce011486ae..9e5da3502fdfe 100644
--- a/nsprpub/pr/include/prinit.h
+++ b/nsprpub/pr/include/prinit.h
@@ -31,11 +31,11 @@ PR_BEGIN_EXTERN_C
 ** The format of the version string is
 **     "<major version>.<minor version>[.<patch level>] [<Beta>]"
 */
-#define PR_VERSION  "4.9.5"
+#define PR_VERSION  "4.9.6 Beta"
 #define PR_VMAJOR   4
 #define PR_VMINOR   9
-#define PR_VPATCH   5
-#define PR_BETA     PR_FALSE
+#define PR_VPATCH   6
+#define PR_BETA     PR_TRUE
 
 /*
 ** PRVersionCheck
diff --git a/nsprpub/pr/src/md/windows/w95cv.c b/nsprpub/pr/src/md/windows/w95cv.c
index afff1b70ee0e9..27b34e6916058 100644
--- a/nsprpub/pr/src/md/windows/w95cv.c
+++ b/nsprpub/pr/src/md/windows/w95cv.c
@@ -304,6 +304,59 @@ void _PR_MD_NOTIFYALL_CV(_MDCVar *cv, _MDLock *lock)
     return;
 }
 
+typedef BOOL (WINAPI *INITIALIZECRITICALSECTIONEX)(
+    CRITICAL_SECTION *lpCriticalSection,
+    DWORD dwSpinCount,
+    DWORD Flags);
+
+static INITIALIZECRITICALSECTIONEX sInitializeCriticalSectionEx;
+
+void _PR_MD_INIT_LOCKS(void)
+{
+    /*
+     * Starting with Windows Vista, every CRITICAL_SECTION allocates an extra
+     * RTL_CRITICAL_SECTION_DEBUG object. Unfortunately, this debug object is
+     * not reclaimed by DeleteCriticalSection(), causing an apparent memory
+     * leak. This is a debugging "feature", not a bug. If we are running on
+     * Vista or later, use InitializeCriticalSectionEx() to allocate
+     * CRITICAL_SECTIONs without debug objects.
+     */
+    HMODULE hKernel32 = GetModuleHandle("kernel32.dll");
+    PR_ASSERT(hKernel32);
+    PR_ASSERT(!sInitializeCriticalSectionEx);
+    sInitializeCriticalSectionEx = (INITIALIZECRITICALSECTIONEX)
+            GetProcAddress(hKernel32, "InitializeCriticalSectionEx");
+}
+
+/*
+ * By default, CRITICAL_SECTIONs are initialized with a spin count of 0.
+ * Joe Duffy's "Concurrent Programming on Windows" book suggests 1500 is
+ * a "reasonable starting point". On single-processor systems, the spin
+ * count is ignored and the critical section spin count is set to 0.
+ */
+#define LOCK_SPIN_COUNT 1500
+
+PRStatus _PR_MD_NEW_LOCK(_MDLock *lock)
+{
+    CRITICAL_SECTION *cs = &lock->mutex;
+    BOOL ok;
+
+    if (sInitializeCriticalSectionEx) {
+        ok = sInitializeCriticalSectionEx(cs, LOCK_SPIN_COUNT,
+                                          CRITICAL_SECTION_NO_DEBUG_INFO);
+    } else {
+        ok = InitializeCriticalSectionAndSpinCount(cs, LOCK_SPIN_COUNT);
+    }
+    if (!ok) {
+        _PR_MD_MAP_DEFAULT_ERROR(GetLastError());
+        return PR_FAILURE;
+    }
+
+    lock->notified.length = 0;
+    lock->notified.link = NULL;
+    return PR_SUCCESS;
+}
+
 void _PR_MD_UNLOCK(_MDLock *lock)
 {
     if (0 != lock->notified.length) {
@@ -311,5 +364,4 @@ void _PR_MD_UNLOCK(_MDLock *lock)
     } else {
         LeaveCriticalSection(&lock->mutex);
     }
-    return;
 }
diff --git a/nsprpub/pr/tests/vercheck.c b/nsprpub/pr/tests/vercheck.c
index 556278fe405cc..3ba852e0aed28 100644
--- a/nsprpub/pr/tests/vercheck.c
+++ b/nsprpub/pr/tests/vercheck.c
@@ -20,9 +20,9 @@
 #include <stdlib.h>
 
 /*
- * This release (4.9.5) is backward compatible with the
+ * This release (4.9.6) is backward compatible with the
  * 4.0.x, 4.1.x, 4.2.x, 4.3.x, 4.4.x, 4.5.x, 4.6.x, 4.7.x,
- * 4.8.x, 4.9, 4.9.1, 4.9.2, 4.9.3, and 4.9.4 releases.
+ * 4.8.x, 4.9, 4.9.1, 4.9.2, 4.9.3, 4.9.4, and 4.9.5 releases.
  * It, of course, is compatible with itself.
  */
 static char *compatible_version[] = {
@@ -35,7 +35,8 @@ static char *compatible_version[] = {
     "4.7.6",
     "4.8", "4.8.1", "4.8.2", "4.8.3", "4.8.4", "4.8.5",
     "4.8.6", "4.8.7", "4.8.8", "4.8.9",
-    "4.9", "4.9.1", "4.9.2", "4.9.3", "4.9.4", PR_VERSION
+    "4.9", "4.9.1", "4.9.2", "4.9.3", "4.9.4", "4.9.5",
+    PR_VERSION
 };
 
 /*
@@ -50,7 +51,7 @@ static char *incompatible_version[] = {
     "3.0", "3.0.1",
     "3.1", "3.1.1", "3.1.2", "3.1.3",
     "3.5", "3.5.1",
-    "4.9.6",
+    "4.9.7",
     "4.10", "4.10.1",
     "10.0", "11.1", "12.14.20"
 };