Git merges in Moodle 2.2.10 by Dan Poltawski

commit 64402c1fe7c2a72b3911fa2299b53ea8245ed3c0
Author: Dan Poltawski <dan@moodle.com>
Date:   Thu, 18 Apr 2013 19:43:12 +0800
Tag:    v2.2.10

Merge branch 'install_22_STABLE' of git://git.moodle.cz/moodle-install into MOODLE_22_STABLE