Filesystems and case-insensitivity

UTF-8 won. We should start giving it its well-earned victory parade. Don't you that, after we're finished banning non-UTF-8 encodings, and after we ban illegal or bizarre code sequences, and after we start normalizing filenames into consistent form, we'll end up in a better place? If in the process of doing that we can't access files called ♀ from old volumes without special compatibility mount options, so be it.