[ut2004] debian 4 ut2004 no mouse

[Ryan C. Gordon]

> This is really weird because I've used ut2k4 in linux for a long time
> and have never had problems like this.

Delete ~/.ut2004/System/User.ini, and, if there's a User.ini in your 
game installation's System dir, delete that too. User.ini will be 
recreated from DefUser.ini, but not if a bogus User.ini is sitting in 
the installation, as I think some patch accidentally added.

--ryan.