Old kernels would produce HW. Also, corrected an hamsi problem for people who didn't use hamsi-expand-big 1.
Added X14 and cleaned up the X13/X15 kernels so all 3 offshoots are in sync. New option "--hamsi-short" or "hamsi-short":true to add a small boost. May not work on all GPUs.
Original implementation of x15 made changes to hamsi, which in turn caused issues with other kernels.