Please add missing lines for the HgCd lamps

Looking at HgCd arcs we are missing quite a few lines in the HgCd.txt file (see ); please add them (e.g. from NIST)

I checked, and I don't think that the lines are from the Ar carrier, but I could be wrong. There are some weak lines which extend the blue coverage, but it isn't clear how useful they are.