Git commits in Moodle 2.5.3 by Colin Campbell

commit 7bdfb60b1480ccc06adc950b09e5cf3899dd2d20
Author: Colin Campbell <colin@umn.edu>
Date:   Fri, 01 Nov 2013 00:12:09 +0800
Tag:    v2.5.3

MDL-42640 quiz: Fix restore of backup without overduehandling setting