Issue #47: revised setup.py to remove option --i420 and to add options --no-bgra and --no-i420
Issue #47: revised setup.py to remove option --i420 and to add options --no-bgra and --no-i420

gift-surg/GIFT-Grab,gift-surg/GIFT-Grab,gift-surg/GIFT-Grab,gift-surg/GIFT-Grab