mozplugger: fixed to properly find X11

www/mozplugger/mozplugger.conf

@@ -2,6 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../mozplugger/mozplugger.conf
+# Copyright (C) 2010 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 #
 # More information can be found in the files COPYING and README.
@@ -12,6 +13,9 @@
 # GNU General Public License can be found in the file COPYING.
 # --- SDE-COPYRIGHT-NOTE-END ---
 
+pkgprefix -t libx11
+var_append makeopt ' ' "X11=$( pkgprefix -r libx11 )"
+
 var_append makeopt ' ' 'linux'
 
 # for libdir != */lib in componion with Makefile.patch