Git commits in Moodle 2.7.4 by Didier Raboud

commit 0cf19119b50d41008a3c49114d73503e16575f8f
Author: Didier Raboud <didier.raboud@liip.ch>
Date:   Fri, 20 Jul 2012 21:41:51 +0800
Tag:    v2.7.4

MDL-34437 shibboleth: Correct the shibboleth wiki links.