[libc-commits] [libc] [libc] Implement killpg (PR #237561)

[Anshitha Yeruva via libc-commits]

anshithayeruva wrote:

Thanks for the review @vonosmas! I've addressed all the feedback: updated to modern \file headers, decoupled killpg to invoke SYS_kill directly, restored CMake whitespace, and split the tests using getpgrp().

https://github.com/llvm/llvm-project/pull/237561