Git commits in Moodle 2.5.7 by Rajesh Taneja

commit c5f489046660e7c83effe878b3e26429e8459bef
Author: Rajesh Taneja <rajesh@moodle.com>
Date:   Thu, 29 May 2014 09:50:22 +0800
Tag:    v2.5.7

MDL-45698 behat: Fixed behat and symfony versions