replace source with . in posix sh scripts

source makes the intent and the inclusion of another script much
clearer, but it's not in POSIX and dash apparently does not support
it.

KEEP/bin/butch

@@ -12,7 +12,7 @@ if [ ! -e "$CONFIG" ] ; then
 	exit 1
 fi
 
-source "$CONFIG"
+. "$CONFIG"
 
 BINDIR=$(dirname "$(readlink -f "$0")")
 
@@ -65,6 +65,6 @@ case $1 in
 	install|prefetch|rebuild) : ;;
 	*) usage;; # we exec anyway to get butch-core's usage info
 esac
-	
+
 exec "$BINDIR"/$prog "$@"
 

build-stage

@@ -1,6 +1,6 @@
 #!/bin/sh
 export H="$PWD"
-source ./config
+. ./config
 
 if [ ! -r "$H"/config ]; then
     printf -- "couldn't read configuration file: %s\n" "$H/config"

enter-chroot

@@ -1,6 +1,6 @@
 #!/bin/sh
 [ -z "$CONFIG" ] && CONFIG=./config
-source "$CONFIG"
+. "$CONFIG"
 export H="$PWD"
 
 if [ -z "$R" ] ; then

utils/print-builddir

@@ -1,4 +1,4 @@
 #!/bin/sh
-source "$PWD"/config
+. "$PWD"/config
 echo "$R"
 

utils/resume-stage0.sh

@@ -5,5 +5,5 @@
 
 # this var is usually set by build-stage; omitting it results in build error of stage0_finish
 export H="$PWD"
-source "$H"/config
+. "$H"/config
 CONFIG="$H"/config BUTCHDB="$R"/var/lib/butch.db "$R"/bin/butch install stage0

utils/run-emulator.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 export H="$PWD"
-source ./config
+. ./config
 
 console=
 rw=rw

utils/update-chroot

@@ -1,7 +1,7 @@
 #!/bin/sh
 MYDIR=$(dirname "$(readlink -f "$0")")
 export H="$MYDIR/.."
-source "$H"/config
+. "$H"/config
 
 if [ -z "$R" ] ; then
 	echo "error sourcing config" >&2