Defines starting with `s' in osfmk/ddb

• SYMTAB_AOUT osfmk/ddb/db_sym.h:213
• SYMTAB_COFF osfmk/ddb/db_sym.h:214
• SYMTAB_MACHDEP osfmk/ddb/db_sym.h:215
• SYMTAB_NAME_LEN osfmk/ddb/db_sym.h:209