Author: Tim Hunt
MDL-20636 Add @package and GPL boiler-plate to files in /question.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=d3603157bf6b72c772d2990f81c3725ef9a1ecb6
http://github.com/moodle/moodle/commit/d3603157bf6b72c772d2990f81c3725ef9a1ecb6