Urban Terror was just updated to another version and also offers another Anticheating software, Battleye. I'm not sure if I made the patch correctly, it also adds to .xpms.
A forum thread explaining what the changes are with full source:
http://www.forums.urbanterror.net/index.php/topic,7420.0.html
Battleye + Urban Terror 4.0 support
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The author should send the unified diff to the mailinglist so it can be discussed. I don't like a special flag for specific anti cheat techniques. I'd rather replace the punkbuster icon with something generic.
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the gametypes are in svn meanwhile. Battleye is dead. closing.