[SDL] Hide ouput of the SDL_SetVideoMode

[Ryan C. Gordon]

> SDL_SetVideoMode(0, 0, 0, SDL_SWSURFACE);
> 
> with...
> 
> SDL_VideoInit("dummy",SDL_SWSURFACE);

I think Sam is adding (or already added) something like this for SDL 
1.3, so you can enumerate and select a specific video driver.

Naturally, there's a difference between SDL_Init and SDL_SetVideoMode, 
even in 1.2 ...

> but it's a very unorthodox and unusual method, and i would prefer to
> instead call a function like...
> 
> void* SDL_SDL_VideoRun();
> 
> which automatically initializes the drivers such that it won't fail.

Can't you just call SDL_CreateRGBSurface() without calling 
SDL_SetVideoMode()? Maybe it's illegal, but I think it should work as 
long as SDL_Init() succeeded. (I think...)  This could be handy for 
getting access to, say, the surface format converters, even if you don't 
specifically plan to use SDL to blit to the screen.

--ryan.