More MOHAA fixes...

[Ryan C. Gordon]

Another MOHAA build...

  http://icculus.org/betas/mohaa/mohaa-lnxded-07252004.tar.bz2

This one has:
- The buffer overflow fix Luigi pointed out.
- The grenade animation crash fix.
- The UBoat spawn fix.

The first one still needs fixing in Spearhead, the other two are fixes
backported from Spearhead, as thus only the original MOHAA was
vulnerable.

Luigi and I are still deciding if the buffer overflow fix covers all
possible exploits, so there might be one more build. And, of course, a
Spearhead update is still forthcoming.

--ryan.