Original commit message from CVS:
* gst/mpegtsparse/Makefile.am:
* gst/mpegtsparse/gstmpegdesc.c:
* gst/mpegtsparse/gstmpegdesc.h:
* gst/mpegtsparse/mpegtspacketizer.c:
* gst/mpegtsparse/mpegtsparse.c:
Added descriptor searching infrastructure from Fluendo TS demuxer.
Add channel name and provider to the sdt structure sent in the
bus message.