Add some test runners.

Examples/test-suite/javascript/varargs_runme.js

@@ -0,0 +1,44 @@
+var varargs = require("./varargs");
+
+if (varargs.test("Hello") != "Hello") {
+  throw new Error("Failed");
+}
+
+var f = new varargs.Foo("Greetings")
+if (f.str != "Greetings") {
+  throw new Error("Failed");
+}
+
+if (f.test("Hello") != "Hello") {
+  throw new Error("Failed");
+}
+
+if (varargs.test_def("Hello",1) != "Hello") {
+  throw new Error("Failed");
+}
+
+if (varargs.test_def("Hello") != "Hello") {
+  throw new Error("Failed");
+}
+
+if (varargs.test_plenty("Hello") != "Hello") {
+  throw new Error("Failed");
+}
+
+if (varargs.test_plenty("Hello", 1) != "Hello") {
+  throw new Error("Failed");
+}
+
+if (varargs.test_plenty("Hello", 1, 2) != "Hello") {
+  throw new Error("Failed");
+}
+
+var thrown = false;
+try {
+  varargs.test_plenty("Hello", 1, 2, 3);
+} catch (err) {
+  thrown = true;
+}
+if (!thrown) {
+  throw new Error("Failed");
+}