llvm-project

485f9f58 - Reland: [libc][POSIX][pthreads] implemented missing pthread_rwlockattr functions (#93622)

Reland: [libc][POSIX][pthreads] implemented missing pthread_rwlockattr functions (#93622) New pull request for https://github.com/llvm/llvm-project/issues/89443 The previous PR was reverted after breaking fullbuild due to a missing struct declaration, which I forgot to commit. Reverts revert and adds the missing pthread_rwlockattr_getkind_np / pthread_rwlockattr_setkind_np functions and tests respecitvely.