triggers: Add dconf update

Necessary for gdm at least.

Makefile-triggers.am

@@ -19,6 +19,7 @@
 
 triggersdir = $(libexecdir)/ostree/triggers.d
 triggers_SCRIPTS = \
+	src/triggers/triggers.d/dconf.trigger \
 	src/triggers/triggers.d/desktop-database.trigger \
 	src/triggers/triggers.d/gdk-pixbuf.trigger \
 	src/triggers/triggers.d/glib.trigger \

src/triggers/triggers.d/dconf.trigger

@@ -0,0 +1,24 @@
+#!/bin/sh
+# Post-installation hook for system dconf schemas.  -*- mode: sh -*-
+#
+# Written by Colin Walters <walters@verbum.org>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+# IfExecutable: dconf
+# LiteralMatch: /etc/dconf/*
+
+exec dconf update