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/CMakeLists.txt

@@ -25,12 +25,17 @@ IF (WIN32)
 	ADD_EXECUTABLE(AppCcdPhysicsDemo
 		main.cpp
 		CcdPhysicsDemo.cpp
+		CcdPhysicsSetup.h
+		CcdPhysicsSetup.cpp
 		${BULLET_PHYSICS_SOURCE_DIR}/build3/bullet.rc
 	)
 ELSE()
 	ADD_EXECUTABLE(AppCcdPhysicsDemo
 		main.cpp
 		CcdPhysicsDemo.cpp
+		CcdPhysicsSetup.h
+		CcdPhysicsSetup.cpp
+
 	)
 ENDIF()