Git commits in Moodle 2.7.9 by David Monllao

commit a5155586fed22fa92c3c847c8e00b123af9fe66b
Author: David Monllao <davidm@moodle.com>
Date:   Mon, 11 May 2015 16:56:06 +0800
Tag:    v2.7.9

MDL-50177 completion: Also accepting cm integer strings