Adapt mysql-test-run.pl to mysqld in 5.1 using "mixed" binlog format by default

mysql-test/lib/mtr_cases.pl

@@ -565,6 +565,7 @@ our @tags=
  ["include/have_innodb.inc", "innodb_test", 1],
  ["include/have_binlog_format_row.inc", "binlog_format", "row"],
  ["include/have_binlog_format_statement.inc", "binlog_format", "stmt"],
+ ["include/have_binlog_format_mixed.inc", "binlog_format", "mixed"],
  ["include/big_test.inc", "big_test", 1],
  ["include/have_debug.inc", "need_debug", 1],
  ["include/have_ndb.inc", "ndb_test", 1],

mysql-test/mysql-test-run.pl

@@ -714,12 +714,20 @@ sub command_line_setup () {
   # --------------------------------------------------------------------------
   # NOTE if the default binlog format is changed, this has to be changed
   $used_binlog_format= "stmt";
+  if ( $mysql_version_id >= 50100 )
+  {
+    $used_binlog_format= "mixed";
+  }
   foreach my $arg ( @opt_extra_mysqld_opt )
   {
     if ( defined mtr_match_substring($arg,"binlog-format=row"))
     {
       $used_binlog_format= "row";
     }
+    elsif ( defined mtr_match_substring($arg,"binlog-format=stmt"))
+    {
+      $used_binlog_format= "stmt";
+    }
   }
   mtr_report("Using binlog format '$used_binlog_format'");