Handle important messages on the pipeline bus.
Handle important messages on the pipeline bus.

svn path=/trunk/; revision=363

Pelagicore/Media-Manager-Rygel-patched,Pelagicore/Media-Manager-Rygel-patched,GNOME/rygel,Pelagicore/Media-Manager-Rygel-patched,GNOME/rygel,jku/rygel,Tarnyko/rygel,jku/rygel,GNOME/rygel,Tarnyko/rygel,luisbg/rygel