Author: Paul Holden
MDL-69492 auth_ldap: normalise member distinguished name config.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=1e08e046e2dd6cd32e951c3465f505ac69389473
http://github.com/moodle/moodle/commit/1e08e046e2dd6cd32e951c3465f505ac69389473
+ 3.9 en [auth_ldap_memberattribute_isdn,auth_ldap]