[libc-commits] [libc] [libc] fix clang-tidy llvm-header-guard warnings (PR #82679)

[Guillaume Chatelet via libc-commits]

gchatelet wrote:

> It seems like all of these are public headers in `include`. I think we had those extra underscores for macro namespacing purposes. I'm not sure if we actually want to remove those, it might be better to remove the check from the include folder.

Or modify the clang tidy so it handles the `include` folder in a special way?
TBH I would prefer to have the clang tidy be the source of truth and have `clang-tidy --fix` do the job.

https://github.com/llvm/llvm-project/pull/82679