[libcxx-commits] [libcxx] [libc++][C++03] Split libc++-specific tests for the frozen headers (PR #144093)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne requested changes to this pull request.

After discussing this some more, we decided to reorganize a few parts of libcxx/test/libcxx before we actually make a copy. I have partially reviewed what needs to be split out and marked where I left it at.

https://github.com/llvm/llvm-project/pull/144093