Variables starting with `u' in bsd/hfs

• UF_IMMUTABLE bsd/hfs/hfs_vfsutils.c:1076
• unicodeChars bsd/hfs/hfs_encodings.h:30
• unicodeTextEncodingDataErr bsd/hfs/hfs_macos_defs.h:756
• uni_str bsd/hfs/hfs_encodings.h:27