compilation cache: tests now part of test suite

tests/rodfiles/gtkex2.nim

@@ -0,0 +1,22 @@
+
+import 
+  glib2, gtk2
+
+proc destroy(widget: pWidget, data: pgpointer){.cdecl.} = 
+  main_quit()
+
+var 
+  window: PWidget
+  button: PWidget
+
+nimrod_init()
+window = window_new(WINDOW_TOPLEVEL)
+button = button_new("Click me")
+set_border_width(PContainer(Window), 5)
+add(PContainer(window), button)
+discard signal_connect(window, "destroy", 
+                           SIGNAL_FUNC(gtkex2.destroy), nil)
+show(button)
+show(window)
+main()
+