Macros in bsd/hfs/hfscommon/Unicode

• Is7BitASCII bsd/hfs/hfscommon/Unicode/UnicodeWrappers.c:264
• IS_DECOMPOSABLE bsd/hfs/hfscommon/Unicode/ConvertUTF.c:291
• IsSpecialASCIIChar bsd/hfs/hfscommon/Unicode/UnicodeWrappers.c:266