added whole system from ola4doc

sys/node_modules/es5-ext/object/validate-stringifiable.js

@@ -0,0 +1,9 @@
+'use strict';
+
+module.exports = function (stringifiable) {
+	try {
+		return String(stringifiable);
+	} catch (e) {
+		throw new TypeError("Passed argument cannot be stringifed");
+	}
+};