Start re-organizing demos so the physics setup can be shared easier (explicit create graphics objects, init/exit physics etc)

Add B3G_RETURN key code, only implemented in Windows so far (todo: Mac, Linux)
Fix Windows key management (use WM_CHAR event instead of WM_KEYUP
Add Return (OnKeyReturn) key support TreeNode, so we can select an item using the return key.

Demos/CcdPhysicsDemo/CcdPhysicsSetup.h

@@ -0,0 +1,23 @@
+
+#ifndef CCD_PHYSICS_SETUP_H
+#define CCD_PHYSICS_SETUP_H
+
+
+#include "../CommonRigidBodySetup.h"
+
+struct CcdPhysicsSetup : public CommonRigidBodySetup
+{
+	virtual void initPhysics(GraphicsPhysicsBridge& gfxBridge);
+
+};
+
+struct KinematicObjectSetup : public CommonRigidBodySetup
+{
+	virtual void initPhysics(GraphicsPhysicsBridge& gfxBridge);
+
+	virtual void stepSimulation(float deltaTime);
+
+};
+
+
+#endif //CCD_PHYSICS_SETUP_H