Merge additional fix for BUG#16752251 from mysql-5.1 to mysql-5.5

mysql-test/include/search_pattern_in_file.inc

+# Purpose:
+#    Simple search with Perl for a pattern in some file.
+#
+#    The advantages compared to thinkable auxiliary constructs using the
+#    mysqltest language and SQL are:
+#    1. We do not need a running MySQL server.
+#    2. SQL causes "noise" during debugging and increases the size of logs.
+#       Perl code does not disturb at all.
+#
+#    The environment variables SEARCH_FILE and SEARCH_PATTERN must be set
+#    before sourcing this routine.
+#
+#    In case of
+#    - SEARCH_FILE and/or SEARCH_PATTERN is not set
+#    - SEARCH_FILE cannot be opened
+#    - SEARCH_FILE does not contain SEARCH_PATTERN
+#    the test will abort immediate.
+#    MTR will report something like
+#    ....
+#    worker[1] Using MTR_BUILD_THREAD 300, with reserved ports 13000..13009
+#    main.1st                                 [ pass ]      3
+#    innodb.innodb_page_size                  [ fail ]
+#            Test ended at 2011-11-11 18:15:58
+#
+#    CURRENT_TEST: innodb.innodb_page_size
+#    # ERROR: The file '<name>' does not contain the expected pattern  <pattern>
+#    mysqltest: In included file "./include/search_pattern_in_file.inc":
+#    included from ./include/search_pattern_in_file.inc at line 36:
+#    At line 25: command "perl" failed with error 255. my_errno=175
+#
+#    The result from queries just before the failure was:
+#    ...
+#    - saving '<some path>' to '<some path>'
+#    main.1st                                 [ pass ]      2
+#
+# Typical use case (check invalid server startup options):
+#    let $error_log= $MYSQLTEST_VARDIR/log/my_restart.err;
+#    --error 0,1
+#    --remove_file $error_log
+#    let SEARCH_FILE= $error_log;
+#    # Stop the server
+#    let $restart_file= $MYSQLTEST_VARDIR/tmp/mysqld.1.expect;
+#    --exec echo "wait" > $restart_file
+#    --shutdown_server 10
+#    --source include/wait_until_disconnected.inc
+#
+#    --error 1
+#    --exec $MYSQLD_CMD <whatever wrong setting> > $error_log 2>&1
+#    # The server restart aborts
+#    let SEARCH_PATTERN= \[ERROR\] Aborting;
+#    --source include/search_pattern_in_file.inc
+#
+# Created: 2011-11-11 mleich
+#
+
+perl;
+    use strict;
+    my $search_file=           $ENV{'SEARCH_FILE'}           or die "SEARCH_FILE not set";
+    my $search_pattern=        $ENV{'SEARCH_PATTERN'}        or die "SEARCH_PATTERN not set";
+    open(FILE, "$search_file") or die("Unable to open '$search_file': $!\n");
+    read(FILE, my $file_content, 50000, 0);
+    close(FILE);
+    if ( not $file_content =~ m{$search_pattern} ) {
+       die("# ERROR: The file '$search_file' does not contain the expected pattern  $search_pattern\n->$file_content<-\n");
+    }
+EOF