Author: Luca Bösch
MDL-44646 administration: Users can be filtered by course enrollment
http://git.moodle.org/gw?p=moodle.git;a=commit;h=78f6d02b8cd1c45cf7d4e5464bdf64e976e3ea18
http://github.com/moodle/moodle/commit/78f6d02b8cd1c45cf7d4e5464bdf64e976e3ea18
+ 3.6 en [anycourses,core_filters]