Changed PHYSFS_file to PHYSFS_File to match rest of API's naming convention. This won't break binary compat (function signatures are extern "C" so name mangling doesn't apply), and I've placed a typedef for the old name to support legacy source code.

#undef DEBUG
#undef DEBUG_CHATTER
#undef NDEBUG
#undef PHYSFS_SUPPORTS_ZIP
#undef PHYSFS_SUPPORTS_GRP
#undef PHYSFS_SUPPORTS_MIX
#undef PHYSFS_SUPPORTS_HOG
#undef PHYSFS_SUPPORTS_MVL
#undef PHYSFS_HAVE_READLINE
#undef PHYSFS_HAVE_LLSEEK