Git commits in Moodle 3.4.1 by Dan Marsden

commit 434c5f8a562c5c510aae0a01ce40ef6e13871034
Author: Dan Marsden <dan@danmarsden.com>
Date:   Fri, 05 Jan 2018 05:21:12 +0800
Tag:    v3.4.1

MDL-61050 auth_ldap: fix regression caused by MDL-42834