Use new ghostpad API; now they actually work in Totem, also.

Use new ghostpad API; now they actually work in Totem, also.

Original commit message from CVS:
* ext/gconf/gstgconfaudiosink.c: (gst_gconf_audio_sink_reset),
(gst_gconf_audio_sink_init), (do_toggle_element),
(cb_toggle_element), (gst_gconf_audio_sink_change_state):
* ext/gconf/gstgconfaudiosink.h:
* ext/gconf/gstgconfvideosink.c: (gst_gconf_video_sink_reset),
(gst_gconf_video_sink_init), (do_toggle_element),
(cb_toggle_element), (gst_gconf_video_sink_change_state):
* ext/gconf/gstgconfvideosink.h:
* gst/autodetect/gstautoaudiosink.c: (gst_auto_audio_sink_reset),
(gst_auto_audio_sink_init), (gst_auto_audio_sink_detect),
(gst_auto_audio_sink_change_state):
* gst/autodetect/gstautoaudiosink.h:
* gst/autodetect/gstautovideosink.c: (gst_auto_video_sink_reset),
(gst_auto_video_sink_init), (gst_auto_video_sink_detect),
(gst_auto_video_sink_change_state):
* gst/autodetect/gstautovideosink.h:
Use new ghostpad API; now they actually work in Totem, also.