[llvm] [Support][Memory] Add memfd based fallback for strict W^X Linux systems (PR #98538)

[via llvm-commits]

minipli-oss wrote:

> ⚠️ C/C++ code formatter, clang-format found issues in your code. ⚠️
> 
> You can test this locally with the following command:
> ```shell
> git-clang-format ... --extensions cpp,inc,h ...
> ```

Ahh, that's the key! I was wondering myself why `git clang-format` wasn't working for me. But, apparently, it ignores *.inc files by default. :/

https://github.com/llvm/llvm-project/pull/98538