Original commit message from CVS:
Remove all usage of gst_pad_get_caps(), and replace it with
gst_pad_get_allowed_caps() or gst_pad_get_negotiated_cap().
Original commit message from CVS:
* ext/alsa/gstalsasrc.c: (gst_alsa_src_pad_factory),
(gst_alsa_src_base_init): Remove bogus "src" request pad.
* gst/mpegstream/gstmpegparse.c: (gst_mpeg_parse_base_init),
(gst_mpeg_parse_class_init): Move pad template registration
to class_init, since the derived class (mpegdemux) doesn't
want them.
