[libc-commits] [libc] [libc] Implement pthread_getthreadid_np and pthread_getunique_np. (PR #197027)

[Schrodinger ZHU Yifan via libc-commits]

https://github.com/SchrodingerZhu approved this pull request.

The change looks good to me. I see @kaladron is pushing forward a new license header style in some other PRs, not sure if that also applys to the changes here. 

https://github.com/llvm/llvm-project/pull/197027