Initialize the important fields of DVBChannel.
Initialize the important fields of DVBChannel.

svn path=/trunk/; revision=383

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