gst/elements/gstfilesrc.*: don't ref the filesrc when creating mmaped buffers. Don...

gst/elements/gstfilesrc.*: don't ref the filesrc when creating mmaped buffers. Don't keep a list of not-yet-destroyed...

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

* gst/elements/gstfilesrc.c: (gst_filesrc_init),
(gst_filesrc_dispose), (gst_filesrc_free_parent_mmap),
(gst_filesrc_map_region), (gst_filesrc_get_mmap):
* gst/elements/gstfilesrc.h:
don't ref the filesrc when creating mmaped buffers. Don't keep a
list of not-yet-destroyed buffers.
* gst/gstbuffer.h:
Deprecated BST_BUFFER_FREE_FUNC and GST_BUFFER_COPY_FUNC