Partial revert of
r45689 "
bug 15470: Don't force-capitalize on Special:Upload. There's no point in throwing errors for any of this crap, really. I think this cleans up the last of the useless errors (for spacing/capitalization) in Special:Upload."
This made the auto-filled destination file name no longer match what we would actually upload as. It would be better to make it *more* accurate (handling normalization of forbidden chars) rather than less accurate.
The particular problem of
bug 15470 should be resolved by actually checking how normalization should proceed, not by failing to do it.