Git commits in Moodle 2.2.3 by sam marshall

commit 167c8c6714db2ca8cc729d73e5f47141a041c1b6
Author: sam marshall <s.marshall@open.ac.uk>
Date:   Fri, 06 Apr 2012 00:14:39 +0800
Tag:    v2.2.3

MDL-32349 Installing can time out with large number of plugins