#2 64-bit fix

[Javier Kohen]

Hi, this small patch eliminates all compilation
warnings on 64-bit platforms and makes the game
startable by fixing the bug detailed on
http://sourceforge.net/tracker/index.php?func=detail&aid=1083343&group_id=32287&atid=405033
.

I can't say how playable the game really is because of
the font bug. That's a pity, I wanted to check out the
game :)

[Javier Kohen]

[Javier Kohen]

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user_id=68628

Note that if you want to keep the reference field 32-bit,
you should use uint instead of ulong (which is normally
64-bit long on 64-bit platforms). In this case modify both
REFS_SIZE and REFS to use uint, no other changes will be
necessary if my patch is applied.

Unless IVAN still compiles for and works in MS-DOS or other
obsolete 16-bit platforms, you should use uint.