Git commits in Moodle 2.7.2 by Jean-Philippe Gaudreau

commit 31d453f7357f27375be8c74c35b7826acace46bf
Author: Jean-Philippe Gaudreau <jp.gaudreau@umontreal.ca>
Date:   Sat, 05 Jul 2014 00:02:34 +0800
Tag:    v2.7.2

MDL-45765 Calendar import: Fix undefined variable in cron when updating calendar subscriptions