Missing function: SDL_BlitSurface

[rombankzero]

The bindings seem to be missing SDL_BlitSurface(). I suspect it was overlooked because it's a macro'd alias for SDL_UpperBlit() in SDL_surface.h. My workaround for now is to just call SDL_UpperBlit() directly, but SDL_BlitSurface() is part of the public API and should be covered.

[mdparker]

Actually, it was an oversight when I ported DerelictSDL2 over. I had that alias and the one for SDL_BlitScaled along with the handful of wrapper functions from the C headers in sdl.d:

https://github.com/DerelictOrg/DerelictSDL2/blob/master/source/derelict/sdl2/sdl.d#L40

I moved all of the functions over but overlooked the aliases. Both aliases are now declared in bindbc-sdl v0.9.1.

Thanks!