gst/gstpad.c (gst_pad_get_range, gst_pad_pull_range): Allow getrange() to return buffers with other caps, while we fi...

Original commit message from CVS:
2007-01-13  Andy Wingo  <wingo@pobox.com>

* gst/gstpad.c (gst_pad_get_range, gst_pad_pull_range): Allow
getrange() to return buffers with other caps, while we fix
demuxers and typefind, or otherwise change part-negotiation.txt.