upmerge 52828

.bzr-mysql/default.conf

 [MYSQL]
 post_commit_to = "commits@lists.mysql.com"
 post_push_to = "commits@lists.mysql.com"
-tree_name = "mysql-5.5"
+tree_name = "mysql-5.5-mtr"

client/mysqltest.cc

@@ -3926,7 +3926,18 @@ void do_perl(struct st_command *command)
     if (!error)
       my_delete(temp_file_path, MYF(0));
 
-    handle_command_error(command, WEXITSTATUS(error));
+    /* Check for error code that indicates perl could not be started */
+    int exstat= WEXITSTATUS(error);
+#ifdef __WIN__
+    if (exstat == 1)
+      /* Text must begin 'perl not found' as mtr looks for it */
+      abort_not_supported_test("perl not found in path or did not start");
+#else
+    if (exstat == 127)
+      abort_not_supported_test("perl not found in path");
+#endif
+    else
+      handle_command_error(command, exstat);
   }
   dynstr_free(&ds_delimiter);
   DBUG_VOID_RETURN;

mysql-test/mysql-test-run.pl

@@ -2194,6 +2194,11 @@ sub environment_setup {
   # to detect that valgrind is being used from test cases
   $ENV{'VALGRIND_TEST'}= $opt_valgrind;
 
+  # Add dir of this perl to aid mysqltest in finding perl
+  my $perldir= dirname($^X);
+  my $pathsep= ":";
+  $pathsep= ";" if IS_WINDOWS && ! IS_CYGWIN;
+  $ENV{'PATH'}= "$ENV{'PATH'}".$pathsep.$perldir;
 }
 
 
@@ -3666,6 +3671,9 @@ sub run_testcase ($) {
 	# Try to get reason from test log file
 	find_testcase_skipped_reason($tinfo);
 	mtr_report_test_skipped($tinfo);
+	# Restart if skipped due to missing perl, it may have had side effects
+	stop_all_servers($opt_shutdown_timeout)
+	  if ($tinfo->{'comment'} =~ /^perl not found/);
       }
       elsif ( $res == 65 )
       {