I'm starting to finish the initial coding for the FileBackend branch (see https://svn.wikimedia.org/viewvc/mediawiki/branches/FileBackend). I still have to get to thumb.php and img_auth.php though. Simple testing of uploads, re-uploads, moves, deletes, restores, and such are working on my local testwiki.
At some point, I'll need to merge all this into /trunk of course. I'd appreciate any help in: * Downloading the code and playing around with it * Finding extensions that will need updating (or functionality that needs to be added to core for them) * Making suggestions and pointing out broken stuff (which I'm sure there is lots of) * Writing test cases (a LOT of these will be needed) * i18n improvements/docs for messages