Original commit message from CVS:
* examples/seeking/seek.c: (make_dv_pipeline), (make_avi_pipeline),
(make_mpeg_pipeline), (make_mpegnt_pipeline),
(make_playerbin_pipeline), (query_durations_elems),
(query_durations_pads), (query_positions_elems),
(query_positions_pads), (update_scale), (iterate), (stop_seek),
(main):
Added playbin seeking example.