Git commits in Moodle 2.5.x by Thijs Kinkhorst

commit 1e34fbb36dd2ccde6a8c9057b9bd94394dc2ef68
Author: Thijs Kinkhorst <thijs@uvt.nl>
Date:   Mon, 14 Oct 2013 10:10:11 +0800
Tag:    v2.5.3

MDL-36818 cas: improve SSL validation