- further fixes of inccorect overflow errors for int (and long on LLP64 systems) * prev commit had bugs * added overflow tests for also int, long, long long (for both, lp64 and llp64) - while at it, fixing a reference leak when not using python with utf8 caching

require"dynport"
dynport("Cocoa")
CocoaInit()
dynport("SDL")
SDL_Init(SDL_INIT_VIDEO)
SDL_SetVideoMode(640,480,32,SDL_OPENGL)
dynport("GL")
quit = false
while not quit do
  glClearColor(0,0,1,1)
  glClear(GL.GL_COLOR_BUFFER_BIT)
  SDL_GL_SwapBuffers()
end