[SDL] SDL_RLEACCEL

[rsteinke at w-link.net]

The documentation for SDL_SetColorKey() says that, if SDL_RLEACCEL is set,
'The surface will actually be encoded for RLE acceleration the first time
SDL_BlitSurface or SDL_DisplayFormat is called on the surface.' Does this
mean an encoded copy of the surface is stored in some private buffer
somewhere? Or does the 'pixels' field of SDL_Surface get reencoded,
so that it need to be treated specially after RLE encoding?

Ron Steinke