ext/ogg/gstoggdemux.c: handle chain parsing correctly in the multichain case

ext/ogg/gstoggdemux.c: handle chain parsing correctly in the multichain case

Original commit message from CVS:
2004-02-03  Benjamin Otte  <in7y118@public.uni-hamburg.de>

* ext/ogg/gstoggdemux.c: (gst_ogg_demux_chain):
handle chain parsing correctly in the multichain case
* ext/theora/theoradec.c: (gst_theora_dec_init), (_theora_ilog),
(theora_dec_from_granulepos), (theora_dec_to_granulepos),
(theora_dec_src_query), (theora_dec_src_event), (theora_dec_event),
(theora_dec_chain):
handle events and queries correctly