mscash2-opencl honours LWS and GWS env variables, des-opencl and bf-opencl honours GWS environment variables, added functions to detect optimal GWS for bf-opencl and des-opencl
Merge pull request #235 from Sayantan2048/unstable-jumbo

mscash2-opencl honours LWS and GWS env variables, des-opencl and bf-open...