Compiz, redundant and outdated files cleanup:
Removed outdated NEWS files.
Removed outdated AUTHORS and ChangeLog files.
Removed plugins/freewins/COPYING - we do not need another copy of the GPL v2 here.
Removed another copy of the GPL v2 from plugins/workarounds.
This will reduce package sizes, download time and bring some order to chaos.
Approved by Didier Roche, PS Jenkins bot, Sam Spilsbury.