first attempt to fix the CSCTF PtLUTs
fixing bug
forward port CSCTFPtLUT bugfix pull 730
forward port CSCTFPtLUT bugfix pull 730
Merge pull request #799 from mulhearn/csctflut_forward_port

CSC PT LUT fix from pull #730 to 5_3_X, now forward ported to 6_2_X