dbus: fix shutdown
dbus: fix shutdown

gconftool-2 wasn't properly shutting down gconfd, because
it was trying to do it before connecting to the daemon.

This commit makes sure that we always first try to connect to
the daemon before asking it to shutdown.

https://bugzilla.gnome.org/show_bug.cgi?id=671490

hyperair/gconf-gdbus,GNOME/gconf,GNOME/gconf,GNOME/gconf,hyperair/gconf-gdbus,hyperair/gconf-gdbus,GNOME/gconf,hyperair/gconf-gdbus