Cleaned dbus-glib's way to pass the pre-generated introspect xml file

network/dbus-glib/dbus-glib.conf

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../dbus-glib/dbus-glib.conf
-# Copyright (C) 2006 The OpenSDE Project
+# Copyright (C) 2006 - 2008 The OpenSDE Project
 #
 # More information can be found in the files COPYING and README.
 #
@@ -16,4 +16,4 @@
 # http://www.mail-archive.com/desktop-devel-list@gnome.org/msg06157.html
 #
 
-hook_add preconf 5 "cp -v $( match_source_file -p introspect ) tools/dbus-bus-introspect.xml"
+var_append extraconfopt ' ' "--with-introspect-xml=$( match_source_file -p introspect )"