implement 'new contact reduction' kernel on CPU , for debugging
Update readme.txt

add a few more (experimental) command line arguments to readme.txt
more debugging to fix Mac OSX OpenCL issue on certain GPUs.
one more debug option for a kernel, to fix a Mac OSX issue (one more to go...)
more rewriting to get this #@!#@!&*( Mac OSX GPU to work
avoid out-of-bounds issue for some OpenCL kernel, hanging Mac OSX (should not happen, need to check why)
split kernel for debugging
split OpenCL kernels: fatal error C1091: compiler limit: string exceeds 65535 bytes in length
fix issue (apparently closestFaceA/B can be -1, need to figure out how that can ever happen (it shouldn’t)
fix cpu version of findCompoundPairs, in order to fix Mac OSX OpenCL compound issues