Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ffmpeg_codecid_to_caps),
(gst_ffmpeg_caps_to_codecid), (gst_ffmpeg_get_codecid_longname):
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_register):
Re-add H263I as intel-h263 (which is not h263-compliant...).
Increase rank of mpeg2video since it plays more videos than
its gst-plugins counterpart, with no regressions.