bzflag port take 2

Hi,

The propolice patches that etoh committed fix the issue that bzflag had, so -fno-stack-protector is gone from CFLAGS.

I've marked the port only for i386 & macppc, as naddy pointed out an alpha issue and it fails to compile on sparc64. I doubt it would be playable on anything but i386/macppc anyway.

The port is at:

http://cryptonomicon.org/ports/files/bzflag-port.tar.gz

Please test, comment, etc.

• jolan