wxwidgets: improved to enable wxMediaCtrl class in the case gstreamer is available

Note:

We need to change the build priority of the gstreamer package so it gets build
before the wxwidgets package, which shouldn't be a problem because the gstreamer
core only depends on glib and libxml2.

x11/wxwidgets/wxwidgets.conf

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../wxwidgets/wxwidgets.conf
-# Copyright (C) 2006 - 2008 The OpenSDE Project
+# Copyright (C) 2006 - 2011 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 # Copyright (C) 1998 - 2003 Clifford Wolf
 #
@@ -36,6 +36,11 @@ var_append confopt ' ' "--with-zlib"
 #not working in 2.5.3.1: var_append confopt ' ' "--enable-accessibility"
 var_append confopt ' ' "--enable-controls"
 
+# enable wxMediaCtrl class
+if pkginstalled -f gstreamer; then
+	var_append confopt ' ' "--enable-mediactrl"
+fi
+
 # needed for xmule and audacity
 var_append confopt ' ' "--enable-compat22"