[clang] [llvm] [mlir] Enforce Unix line endings for Clang/LLVM/MLIR projects (PR #161460)

[James Henderson via llvm-commits]

https://github.com/jh7370 approved this pull request.

Windows developer here, LGTM. I have most of my tree with \n line endings and haven't seen any negative impacts.

What happens to the files that specifically require `\r\n` endings for test purposes? Are these going to get mis-formatted/flagged as incorrect by clang-format?

https://github.com/llvm/llvm-project/pull/161460