mxfdemux: Add D10 mapping (MPEG-2 variant)

Submitted by Baldur Gislason

Description

Some of the MXF files I open with mxfdemux do not link up.
I may execute something like
gst-launch -v filesrc --gst-debug-level=5 location=283267.mxf ! decodebin ! video/x-raw-yuv ! fakesink
and the pipeline will not link up. Looking through the output I may see messages like "No essence track for this essence element" which don't appear when the playback works.
File format is:
Video codec: IMX(D-10) 30 Mb/s, 720x608, 25 fps, upper field first
Audio codec: 8 Channel PCM, 24 bit, 48khz
Wrapper: MXF OPa1

Output from gst-launch:
http://bigben.medizza.com/b/283267output.txt.gz
Sample file:
http://bigben.medizza.com/b/283267bork.mxf