ios: fill in CFBundleVersion and CFBundleShortVersionString information better

Build physfs lib before engine

Replay without frontend mode

pas2c is now fully parametric with command line options (maybe unC0Rr needs to clean this up a little)

Simplify ammo menu conditions so it shows up in more states. Should fix issue #465. The part w/ sliding in uworld is main #465 problem.

Fix function prototype

removing the optimisation that caused (most likely) the lua crashes on osx

pas2c can search for inc files in alternate folders (needed for out of source builds)