Analyse this forks of original guetzli-cuda-opencl and try get all fixes and improvements

[doterax]

Forks to analyse:

• [ ] https://github.com/crass00/guetzli-cuda-opencl/commits?author=crass00

• [ ] https://github.com/yaohuaxin/guetzli-cuda-opencl

• [x] https://github.com/yyamamoto79/guetzli-cuda-opencl