Original commit message from CVS:
* ext/theora/theoradec.c: (_inc_granulepos),
(theora_dec_src_event), (theora_dec_sink_event),
(theora_handle_comment_packet), (theora_handle_type_packet),
(theora_handle_header_packet), (theora_handle_data_packet),
(theora_dec_chain):
* ext/theora/theoraenc.c: (gst_theora_enc_class_init),
(gst_theora_enc_init), (theora_enc_sink_setcaps),
(theora_push_buffer), (theora_push_packet),
(theora_enc_sink_event), (theora_enc_chain),
(theora_enc_change_state), (theora_enc_set_property),
(theora_enc_get_property):
Added stream lock to decoder so that we can serialize
the discont event.
More theoraenc porting, recover from errors, do clean
shutdown.