Author: Zig Tan
MDL-61568 repository_coursefiles: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f1e5ab771533c3e6788ba03adc2990b26ff5032b
http://github.com/moodle/moodle/commit/f1e5ab771533c3e6788ba03adc2990b26ff5032b
+ 3.4 en [privacy:metadata,repository_coursefiles]