SDL_VERSION macro is not exposed

[dariost]

https://wiki.libsdl.org/SDL_VERSION doesn't seem to be exposed. sdl2::version::version uses SDL_GetVersion (https://github.com/Rust-SDL2/rust-sdl2/blob/master/src/sdl2/version.rs#L38), which returns the linked version. SDL_VERSION returns the compiled version instead.

SDL_VERSION is crucial for functions like https://wiki.libsdl.org/SDL_GetWindowWMInfo.

[Cobrand]

Well, how would you implement that? If sdl2-sys was dynamically generated via bindgen, we would be able to get this macro right, but otherwise there is simply no way. Say SDL_VERSION becomes 2.0.6, and it has code dependant on it; what happens if that code actually uses 2.0.5?