Git commits in Moodle 2.6.6 by Corey Wallis

commit 84dbe70d1e066d6ba78705bb80afef74133812b6
Author: Corey Wallis <corey.wallis@netspot.com.au>
Date:   Fri, 17 Oct 2014 11:58:49 +0800
Tag:    v2.6.6

MDL-46517 calendar: adjust dates for DST