Git commits in Moodle 2.6.0 by Shamim Rezaie

commit 6dd59aabfae39566ec32a3108ebf848f87243b88
Author: Shamim Rezaie <support@foodle.org>
Date:   Mon, 10 Jun 2013 12:47:43 +0800
Tag:    v2.6.0-beta

MDL-18375 calendar: added multiple calendar support