Original commit message from CVS:
* ext/dv/gstdvdemux.c: (gst_dvdemux_demux_frame):
* gst/avi/gstavidemux.c: (gst_avi_demux_get_src_query_types),
(gst_avi_demux_handle_seek):
Set correct stream_time in newsegment event.
avi can also handle a duration query now.