x11: replace its usage by xlibsWrapper directly

Scilab note: the parameters already had pointed to nonexistent dirs
before this set of refactoring. But that config wasn't even used by
default.

pkgs/development/libraries/giblib/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, x11, imlib2 }:
+{ stdenv, fetchurl, xlibsWrapper, imlib2 }:
 
 stdenv.mkDerivation rec {
   name = "giblib-1.2.4";
@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
     sha256 = "1b4bmbmj52glq0s898lppkpzxlprq9aav49r06j2wx4dv3212rhp";
   };
   
-  buildInputs = [x11 imlib2];
+  buildInputs = [xlibsWrapper imlib2];
 
   meta = {
     homepage = http://linuxbrit.co.uk/giblib/;