Git commits in Moodle 2.8.3 by Gilles-Philippe Leblanc

commit 6dc66f5a48ba946c978634a552fcd639a99f88d6
Author: Gilles-Philippe Leblanc <gilles-philippe.leblanc@umontreal.ca>
Date:   Fri, 16 Jan 2015 22:43:10 +0800
Tag:    v2.8.3

MDL-48873 auth_cas: Wrong redirection with bad multiauth login