Git commits in Moodle 2.4.1 by Didier Raboud

commit f4537d56761990cb66a6accb0df8534c495febb1
Author: Didier Raboud <didier.raboud@liip.ch>
Date:   Tue, 18 Dec 2012 21:32:15 +0800
Tag:    v2.4.1

MDL-37157: Normalize short answers before comparison