SDL_compat: migrate to by-name

-2
pkgs/development/libraries/SDL_compat/default.nix pkgs/by-name/sd/SDL_compat/package.nix
pkgs/development/libraries/SDL_compat/setup-hook.sh pkgs/by-name/sd/SDL_compat/setup-hook.sh
-2
pkgs/top-level/all-packages.nix
··· 23454 23454 libGLU = null; 23455 23455 }); 23456 23456 23457 - SDL_compat = callPackage ../development/libraries/SDL_compat { }; 23458 - 23459 23457 SDL = SDL_classic; 23460 23458 23461 23459 SDL2 = callPackage ../development/libraries/SDL2 {