Some fixed

- OpenCL SHA2 formats have to follow CPU TO_binary code.
- Fix auto-tuning for pwsafe (split kernel).

To test:
LWS=0 GWS=0 DETAILS= STEP= ../run/john -fo:pwsafe-opencl -t
LWS=0 GWS=0 STEP= ../run/john -fo:pwsafe-opencl -t
LWS=0 GWS=0 DETAILS=  ../run/john -fo:pwsafe-opencl -t