[libc-commits] [libc] [libc] Improve lit test discovery and execution (PR #192993)

[Jeff Bailey via libc-commits]

kaladron wrote:

Hi Joseph!  With this change, the check-libc-lit appears to be working in the runtime build.  I also double checked that this hasn't interfered with the standard native build as well.

https://github.com/llvm/llvm-project/pull/192993