Remove uses of new GStreamer API
Remove uses of new GStreamer API

Various GstMessageType members were added after 0.10.0, so we shouldn't
use them.

GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets,GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets