.. mostly by not making it use SDL_main.h, because it implements its
own SDL main functionality anyway.
However, I have no way to test this code and as long as SDL3 is not in
homebrew testing it in the CI build isn't easy either.
Add missing SDLMain and icon/resource files to generated .xcodeproj
Now builds on Lion in XCode4 with the 10.6 SDK using LLVM-GCC4.2.
Also tested on WinXP in VS 9 2008 Professional, I don't appear to have
broken anything there, stuff like MACOSX_BUNDLE_INFO_PLIST is
effectively ignored.
