Unjustified prohibition of symbolic permission usage

[CuriousGeorgiy]

ERROR:SYMBOLIC_PERMS: Symbolic permissions 'S_IRWXU' are not preferred. Consider using octal permissions '0700'.
#164: FILE: src/lua/fio.c:786:
+	luaL_tablepush("S_IRWXU", lua_pushinteger, S_IRWXU);