[libc-commits] [libc] [libc] Add some integration features into newhdrgen (PR #114272)

[Michael Jones via libc-commits]

https://github.com/michaelrj-google commented:

Code changes overall LGTM, make sure to update the docs where necessary: https://github.com/llvm/llvm-project/blob/main/libc/docs/dev/header_generation.rst?plain=1

https://github.com/llvm/llvm-project/pull/114272