[libc-commits] [libc] [libc] Support C23 'b' (binary) modifier in printf (PR #80851)

[via libc-commits]

https://github.com/michaelrj-google approved this pull request.

LGTM with a nit. Feel free to land after fixing the nit, or ping me if you don't have commit access.

https://github.com/llvm/llvm-project/pull/80851