Git commits in Moodle 2.2.2 by Gootvilig David Hai

commit 8d11716bfcf4aefaf1d02435ce090e985e54ee3a
Author: Gootvilig David Hai <dhg@atarplpl.co.il>
Date:   Mon, 05 Mar 2012 20:38:13 +0800
Tag:    v2.2.2

MDL-31876 questionlib: fix question_has_capability_on memory bloat