Original commit message from CVS:
* ext/ffmpeg/gstffmpegenc.c: (gst_ffmpegenc_init),
(gst_ffmpegenc_connect):  Negotiation fixes.
* ext/mpeg2dec/gstmpeg2dec.c: (gst_mpeg2dec_negotiate_format):
Remove inappropriate gst_caps_free().
* sys/ximage/ximagesink.c: (gst_ximagesink_sinkconnect):
Reenable Ronald's internal resize code, since the core handles
it correctly now.