Author: Andrew Davis
MDL-30987 message: updated phpdocs for /lib/messagelib.php and /message
http://git.moodle.org/gw?p=moodle.git;a=commit;h=6fbd60ef5757185280498771e7c4a8dd7ac4376a
http://github.com/moodle/moodle/commit/6fbd60ef5757185280498771e7c4a8dd7ac4376a