Git commits in Moodle 2.5.7 by Ankit Agarwal

commit ec6f010b225d6beb097e11ee18f69907a7757857
Author: Ankit Agarwal <ankit@moodle.com>
Date:   Thu, 10 Jul 2014 17:44:59 +0800
Tag:    v2.5.7

MDL-46148 qtype_calculated: low-level defence against bad formulas