[libc-commits] [libc] [libc] add wmemchr, wcslen, wcschr, wcsrchr, wcspbrk, wcsstr (PR #121183)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

@RossComputerGuy may I take over this PR?  I'd like to split it up into one PR per fn (so that any issues in code review don't block everything from landing). I'll keep you as the author and note myself in the commit message as co author, unless you'd prefer for me to do something different?

https://github.com/llvm/llvm-project/pull/121183