[libcxx-commits] [libcxx] [libc++] Add #if 0 block to all the top-level headers (PR #119234)

[Nikolas Klauser via libcxx-commits]

philnik777 wrote:

> LGTM assuming:
> 
>     1. Green CI
> 
>     2. When you substitute back `#if 0\n#else` and `#endif // 0` to nothing and run clang-format, this patch is a no-op.
> 
> 
> This should be easy to check.

I've had a few hiccups due to the comments being formatted, but with a few manual fixes for that the diff was only the disagreement between my version of clang-format and the one used in the CI.

https://github.com/llvm/llvm-project/pull/119234