misc pkgs: Basic sed to get fix pkgconfig and autoreconfHook buildInputs

Only acts on one-line dependency lists.

pkgs/development/libraries/libwnck/3.x.nix

@@ -13,7 +13,8 @@ stdenv.mkDerivation {
 
   patches = [ ./install_introspection_to_prefix.patch ];
 
-  buildInputs = [ pkgconfig intltool ];
+  nativeBuildInputs = [ pkgconfig ];
+  buildInputs = [ intltool ];
   propagatedBuildInputs = [ libX11 gtk3 ];
 
   meta = {

pkgs/development/libraries/libwnck/default.nix

@@ -15,7 +15,8 @@ stdenv.mkDerivation rec {
   outputs = [ "out" "dev" "devdoc" ];
   outputBin = "dev";
 
-  buildInputs = [ pkgconfig gtk2 intltool xorg.libX11 xorg.libXres ];
+  nativeBuildInputs = [ pkgconfig ];
+  buildInputs = [ gtk2 intltool xorg.libX11 xorg.libXres ];
   # ?another optional: startup-notification
 
   configureFlags = [ "--disable-introspection" ]; # not needed anywhere AFAIK