* grub-core/fs/hfs.c (MAX_UTF8_PER_MAC_ROMAN): New define.
(macroman): New const array.
(macroman_to_utf8): New function.
(utf8_to_macroman): Likewise.
(grub_hfs_find_dir): Use utf8_to_macroman.
(grub_hfs_dir): Use macroman_to_utf8.
Set case_insensitive.