Port fix for stdin support in mysqlbinlog from MariaDB to Google MySQL.

third_party/mysql.patch

@@ -1,3 +1,41 @@
+diff --git a/client/mysqlbinlog.cc b/client/mysqlbinlog.cc
+index f85219a..72081df 100644
+--- a/client/mysqlbinlog.cc
++++ b/client/mysqlbinlog.cc
+@@ -36,6 +36,7 @@
+ #include "mysql_priv.h" 
+ #include "log_event.h"
+ #include "sql_common.h"
++#include "my_dir.h"
+ #include <welcome_copyright_notice.h> // ORACLE_WELCOME_COPYRIGHT_NOTICE
+
+ #define BIN_LOG_HEADER_SIZE	4
+@@ -1790,6 +1791,7 @@ static Exit_status check_header(IO_CACHE* file,
+   uchar header[BIN_LOG_HEADER_SIZE];
+   uchar buf[PROBE_HEADER_LEN];
+   my_off_t tmp_pos, pos;
++  MY_STAT my_file_stat;
+
+   delete glob_description_event;
+   if (!(glob_description_event= new Format_description_log_event(3)))
+@@ -1799,7 +1801,16 @@ static Exit_status check_header(IO_CACHE* file,
+   }
+
+   pos= my_b_tell(file);
+-  my_b_seek(file, (my_off_t)0);
++
++  /* fstat the file to check if the file is a regular file. */
++  if (my_fstat(file->file, &my_file_stat, MYF(0)) == -1)
++  {
++    error("Unable to stat the file.");
++    return ERROR_STOP;
++  }
++  if ((my_file_stat.st_mode & S_IFMT) == S_IFREG)
++    my_b_seek(file, (my_off_t)0);
++
+   if (my_b_read(file, header, sizeof(header)))
+   {
+     error("Failed reading header; probably an empty file.");
 diff --git a/google/compile.inc b/google/compile.inc
 index efdac62..edc9170 100644
 --- a/google/compile.inc