Fix mac target link arguments
Fix mac target link arguments

It should now be what the old behaviour was. If either mac_framework
or use_mac_framework feature is set then it will use kind=framework, if
not then it will use normal library name link argument.

AngryLawyer/rust-sdl2,Rust-SDL2/rust-sdl2,Rust-SDL2/rust-sdl2,Cobrand/rust-sdl2,Rust-SDL2/rust-sdl2,Cobrand/rust-sdl2,Cobrand/rust-sdl2