[CMake] Problem using VS-compiled Clang as a C/C++ compiler.

[Anton Yartsev]

Hi Benjamin,

thanks for the idea, tried to use simple paths, unfortunately it doesn't 
solved the problem.
> the path to your compiler seems to have spaces in it. I had problems 
> on Windows with spaces or other special characters in the compiler 
> path, too. Please try to locate the compiler in another path and see 
> if it fixes your issue. If it does, maybe the CMake developers could 
> check the path escaping on Windows.
>
> Kind regards
> Benjamin
>
-- 
Anton