xlibs: replace occurrences by xorg

This seems to have been confusing people, using both xlibs and xorg, etc.
- Avoided renaming local (and different) xlibs binding in gcc*.
- Fixed cases where both xorg and xlibs were used.
Hopefully everything still works as before.

pkgs/misc/emulators/wine/base.nix

@@ -19,7 +19,7 @@ stdenv.mkDerivation ((lib.optionalAttrs (! isNull buildScript) {
 
   nativeBuildInputs = toBuildInputs pkgArches (pkgs: (with pkgs; [
     freetype fontconfig mesa mesa_noglu.osmesa libdrm libpng libjpeg openssl gnutls cups ncurses
-  ]) ++ (with pkgs.xlibs; [
+  ]) ++ (with pkgs.xorg; [
     xlibsWrapper libXi libXcursor libXinerama libXrandr libXrender libXxf86vm libXcomposite
   ]));