[libcxx-commits] [libcxx] [libc++] Clean up windows macros (PR #207577)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne commented:

I think this makes sense to me, with a few changes to the naming scheme.

I think @mstorsjo should definitely weigh in though.

https://github.com/llvm/llvm-project/pull/207577