gst/elements/gstfilesrc.c: Fixing seeking by making FLUSH happen again and even befor...

gst/elements/gstfilesrc.c: Fixing seeking by making FLUSH happen again and even before DISCONT.

Original commit message from CVS:
2004-01-29  Julien MOUTTE  <julien@moutte.net>

* gst/elements/gstfilesrc.c: (gst_filesrc_get),
(gst_filesrc_uri_handler_init): Fixing seeking by making FLUSH happen
again and even before DISCONT.
* gst/gstpad.c: (gst_pad_event_default): Remove a unused switch case.
* libs/gst/bytestream/bytestream.c: (gst_bytestream_get_next_buf): Fix
bytestream so that it's not stopping to fill the bytestream if events
different than EOS or DISCONT are received. Instead it process them so
that they go downstream.