Add support for SDL_GL_CONTEXT_NO_ERROR.
Add support for SDL_GL_CONTEXT_NO_ERROR.

Allows graphics drivers to run with reduced overhead.
Cobrand/rust-sdl2,Rust-SDL2/rust-sdl2,Rust-SDL2/rust-sdl2,Rust-SDL2/rust-sdl2,Cobrand/rust-sdl2,AngryLawyer/rust-sdl2,Cobrand/rust-sdl2