Author: Ankit Kumar Agarwal
Forums check on filesize if the file is added to the forum from private area
http://git.moodle.org/gw?p=moodle.git;a=commit;h=292faa4f7de3e5a5b8243a7777cc42fd0a3c1207
http://github.com/moodle/moodle/commit/292faa4f7de3e5a5b8243a7777cc42fd0a3c1207
+ 2.1 en [filesizenull,core_repository]