[MOVED FROM BAD 02/57] gst/flv/: Handle not linked pads, try to make it reusable...

[MOVED FROM BAD 02/57] gst/flv/: Handle not linked pads, try to make it reusable, more safety checks.

Original commit message from CVS:
2007-07-25  Julien MOUTTE  <julien@moutte.net>

(gst_flv_demux_chain), (gst_flv_demux_pull_tag),
(gst_flv_demux_change_state), (gst_flv_demux_dispose),
(gst_flv_demux_init):
* gst/flv/gstflvdemux.h:
* gst/flv/gstflvparse.c: (FLV_GET_STRING),
(gst_flv_parse_metadata_item), (gst_flv_parse_tag_script),
(gst_flv_parse_tag_audio), (gst_flv_parse_tag_video),
(gst_flv_parse_header):
* gst/flv/gstflvparse.h: Handle not linked pads, try to make it
reusable, more safety checks.