[libc-commits] [libc] [libc] add `pthread_cond_*` public interfaces (PR #193656)

[Alexey Samsonov via libc-commits]

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

Mostly LGTM, I've got a couple of small nits.

Please let @kaladron  and/or @michaelrj-google  take a look as well.


https://github.com/llvm/llvm-project/pull/193656