Fixes regression from #49 (91d745b6fb)

examples/racing/index.html

@@ -117,14 +117,13 @@
     <script src="../../src/flash/display/Graphics.js"></script>
     <script src="../../src/flash/display/Shape.js"></script>
     <script src="../../src/flash/display/SimpleButton.js"></script>
+    <script src="../../src/flash/display/MorphShape.js"></script>
     <script src="../../src/flash/geom/Point.js"></script>
     <script src="../../src/flash/geom/Rectangle.js"></script>
     <script src="../../src/flash/geom/Matrix.js"></script>
     <script src="../../src/flash/geom/ColorTransform.js"></script>
     <script src="../../src/flash/geom/Transform.js"></script>
-    <!--
     <script src="../../src/flash/media/SoundTransform.js"></script>
-    -->
     <script src="../../src/flash/media/Sound.js"></script>
     <script src="../../src/flash/media/SoundMixer.js"></script>
     <script src="../../src/flash/media/Video.js"></script>
@@ -136,9 +135,7 @@
     <script src="../../src/flash/system/Capabilities.js"></script>
     <script src="../../src/flash/system/FSCommand.js"></script>
     <script src="../../src/flash/ui/Keyboard.js"></script>
-    <!--
     <script src="../../src/flash/ui/Mouse.js"></script>
-    -->
     <script src="../../src/flash/utils/Timer.js"></script>
     <script src="../../src/flash/stubs.js"></script>
   </head>