pkgsel: changed GTK module to force cairo's

pkgsel.d/Desktop/GUI_Toolkit/10-gtk.ask

@@ -1,12 +1,12 @@
 # --- SDE-COPYRIGHT-NOTE-BEGIN ---
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
-# 
-# Filename: target/mnemosyne/pkgsel/Desktop/GUI_Toolkit/10-gtk.ask
-# Copyright (C) 2006 The OpenSDE Project
+#
+# Filename: target/mnemosyne/pkgsel.d/Desktop/GUI_Toolkit/10-gtk.ask
+# Copyright (C) 2006 - 2008 The OpenSDE Project
 # Copyright (C) 2002 - 2006 Alejandro Mery
-# 
+#
 # More information can be found in the files COPYING and README.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; version 2 of the License. A copy of the
@@ -15,11 +15,11 @@
 
 #Description: GTK+
 #Dependencies: X!=none
+#Forced: cairo
 
 X gtk+
 X pango
 X atk
-X cairo
 
 # and C++ bindings
 X libsigc++