Hello,

I'd really like to cleanup the code for SDL_main, but a prerequisite
is to change reading of cache information on PPC Linux. This patch is
based on suggestion by Hollis Blanchard. If ppc_init_cacheline_sizes
gets fixed on PPC Linux we will no longer need to pass the "env"
variable around and the code will be cleaner. Unfortunately I don't
have access to PPC Linux, so I can't really test if the patch works or
even compiles, so any help is appreciated.

Thanks,
Filip Navara