[libcxx-commits] [libcxx] [libc++] Renames ABI tag. (PR #78342)

[Louis Dionne via libcxx-commits]

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

LGTM but I'd like to have a version identifier in the ABI tag, to avoid tainting `nua` forever.

https://github.com/llvm/llvm-project/pull/78342