Initial commit 2.5.2+ 2.5.3+

Works with Moodle 2.5.2+ and Moodle 2.5.3+ and was built against Totara 2.5.9
Based on https://moodle.org/pluginfile.php/183/mod_forum/attachment/1059969/ldap-clones-patch-scriptv10_2.5.2.zip
From Moodle forum: https://moodle.org/mod/forum/discuss.php?d=74279