Clang: Add standard flags support when simulating MSVC
When Clang 3.9 simulates MSVC 19.0 or higher it knows the -std: flags that such versions of MSVC defines.
Fixes: #17866 (closed)
Topic-rename: clang-cl-std
Edited by Brad King
When Clang 3.9 simulates MSVC 19.0 or higher it knows the -std: flags that such versions of MSVC defines.
Fixes: #17866 (closed)
Topic-rename: clang-cl-std