More fixes for bcrypt-opencl. It couldn't handle things like LWS=7.
DES-opencl: Get rid of hard coded stuff and fix device auto-tuning.
Update doc/BUGS.
Merge branch 'bleeding-jumbo' into bleeding-mask

* bleeding-jumbo:
  Update doc/BUGS.
  DES-opencl: Get rid of hard coded stuff and fix device auto-tuning.
  More fixes for bcrypt-opencl. It couldn't handle things like LWS=7.

Conflicts:
	src/opencl_DES_bs_b.c

Note to @sayantan2048: The DES-opencl changes from bleeding-jumbo was NOT
merged. You'll get to do that.