added whole system from ola4doc

sys/node_modules/es5-ext/object/clear.js

@@ -0,0 +1,16 @@
+'use strict';
+
+var keys = require('./keys');
+
+module.exports = function (obj) {
+	var error;
+	keys(obj).forEach(function (key) {
+		try {
+			delete this[key];
+		} catch (e) {
+			if (!error) error = e;
+		}
+	}, obj);
+	if (error !== undefined) throw error;
+	return obj;
+};