[libcxx-commits] [libcxx] [libc++][NFC] Merge is{, _nothrow, _trivially}{, _copy, _move, _default}{_assignable, _constructible} (PR #85308)

[Louis Dionne via libcxx-commits]

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

LGTM, but I would also support merging the `nothrow` variants together, so that we only have `is_assignable.h` and `is_constructible.h`. But LGTM as-is too.

https://github.com/llvm/llvm-project/pull/85308