Add two Javascript testcases converted from Python

Examples/test-suite/javascript/inherit_missing_runme.js

@@ -0,0 +1,19 @@
+var inherit_missing = require("inherit_missing");
+
+a = inherit_missing.new_Foo()
+b = new inherit_missing.Bar()
+c = new inherit_missing.Spam()
+
+x = inherit_missing.do_blah(a)
+if (x != "Foo::blah")
+    throw new Error("Whoa! Bad return {}".format(x))
+
+x = inherit_missing.do_blah(b)
+if (x != "Bar::blah")
+    throw new Error("Whoa! Bad return {}".format(x))
+
+x = inherit_missing.do_blah(c)
+if (x != "Spam::blah")
+    throw new Error("Whoa! Bad return {}".format(x))
+
+inherit_missing.delete_Foo(a)

Examples/test-suite/javascript/virtual_derivation_runme.js

@@ -0,0 +1,8 @@
+var virtual_derivation = require("virtual_derivation");
+//
+// very innocent example
+//
+b = new virtual_derivation.B(3)
+if (b.get_a() != b.get_b())
+    throw new Error("something is really wrong")
+