[libcxx-commits] [libcxx] [libc++] Handle _LIBCPP_HAS_NO_{THREADS, LOCALIZATION} consistently with other carve-outs (PR #98319)

[Mark de Wever via libcxx-commits]

mordante wrote:

I can see this change affecting some users. For example, those who use CMake's `try_compile` and include `<thread>` to test whether threading is available. For that reason I feel we should add this change to the release notes.

I also wonder whether it would be better to land this after LLVM-19 has branched. Just in case it causes real world breakage. 


https://github.com/llvm/llvm-project/pull/98319