lsb-printing: added libtiff required by ghostscript

pkgsel.d/lsb-printing.ask

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: target/linux-base/pkgsel.d/lsb-printing.ask
-# Copyright (C) 2009 The OpenSDE Project
+# Copyright (C) 2009 - 2011 The OpenSDE Project
 #
 # More information can be found in the files COPYING and README.
 #
@@ -17,3 +17,6 @@
 X cups
 X ghostscript
 X foomatic-filters
+
+# Needed by ghostscript
+X libtiff