MySql getListTableForeignKeysSQL doesn't work for 5.0.xx

The sql contains mysql specific code. And for the mysql 5.0.xxx the sql statement has syntax error.

in /Doctrine/DBAL/Platforms/MySqlPlatform.php:
public function getListTableForeignKeysSQL($table, $database = null)
{
$sql = "SELECT DISTINCT k.`CONSTRAINT_NAME`, k.`COLUMN_NAME`, k.`REFERENCED_TABLE_NAME`, ".
"k.`REFERENCED_COLUMN_NAME` /*!50116 , c.update_rule, c.delete_rule */ ".
"FROM information_schema.key_column_usage k /*!50116 ".
"INNER JOIN information_schema.referential_constraints c ON ".
" c.constraint_name = k.constraint_name AND ".
" c.table_name = '$table' */ WHERE k.table_name = '$table'";

if ($database)

$sql .= " AND `REFERENCED_COLUMN_NAME` is not NULL";

return $sql;
}

For the mysql lower as 5.1.16 the SQL could be as the following:

SELECT DISTINCT k.`CONSTRAINT_NAME`, k.`COLUMN_NAME`, k.`REFERENCED_TABLE_NAME`, k.`REFERENCED_COLUMN_NAME` FROM information_schema.key_column_usage k WHERE k.table_name = 'some_table' AND k.table_schema = 'some database' AND c.constraint_schema = 'some database' AND `REFERENCED_COLUMN_NAME` is not NULL

In this statement there is no reference of c