[ut2003io] unable to use autoupdater for 2225

[Ryan C. Gordon]

>>I tried to autoupdate to 2225, and it stops right in the middle of the update 
>>with the message: no matching delta for /..../Setup.int

Apparently one of the Bonus Packs has this file, too, and it confuses 
the patch.

loki_update has been a total failure for ut2003; I don't think I'll use 
it again on other projects until it gets redesigned.

--ryan.