Git commits in Moodle 2.9.2 by Adam Riddell

commit 5ca31b1621ae751cf5234a4035e8d7e5ac84bfee
Author: Adam Riddell <adamr@catalyst-au.net>
Date:   Wed, 08 Jul 2015 13:28:55 +0800
Tag:    v2.9.2

MDL-50800 question: Add missing make_answer method