add "win64-mingw-x86-64" build target
bcrypt-opencl: Ensure GWS is multiple of LWS.
mask.c get_progress() bugfix: It was sometimes reading uninitialized data,
resulting in random progress output (typically 0.00%).
mscash2-opencl: Proper Unicode support.
des-opencl bugfix: Do not release kernel unless it was initialized. Not
sure if this was a driver bug here, but it won't harm anyway.
Fixes and added info to --list=cuda-devices.
Cosmetical fix for --list=cuda-devices: Clock rates are base 10, not base 2.
This is the very definition of a cosmetical fix.
Make rar-opencl count accelerators as GPU not CPU.
rar-opencl: cosmetical.