ReflexUnit-Beta1.swc does not work with flex sdk 3

```
What steps will reproduce the problem?
1. add the swc file to a actionscript or flex project using flex sdk (tested on
version 3.0.1.1728
2. run the project

What is the expected output? What do you see instead?
The app is compiled but the sdk changed the method signature so it throws an
error. If the swc is compiled with the new
sdk it works fine.

What version of the product are you using? On what operating system?
tested on flex builder 3 on mac os x 10.5.3

Please provide any additional information below.

the debug stack trace:
ArgumentError: Error #1063: Argument count mismatch on
mx.binding::PropertyWatcher(). Expected 3, got 2.
at _reflexunit_framework_display_flexviewer_FlexViewerWatcherSetupUtil/setup()
at reflexunit.framework.display.flexviewer::FlexViewer/initialize()
at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::childAdded()
at mx.core::Container/http://www.adobe.com/2006/flex/mx/internal::childAdded()
at mx.core::Container/addChildAt()
at mx.core::Container/addChild()
at mx.core::Container/createComponentFromDescriptor()
at mx.core::Container/createComponentsFromDescriptors()
at mx.core::Container/createChildren()
at mx.core::UIComponent/initialize()
at mx.core::Container/initialize()
at mx.core::Application/initialize()
at TestRunner/initialize()
at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::childAdded()
at mx.managers::SystemManager/initializeTopLevelWindow()
at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::docFrameHandler()

```

Original issue reported on code.google.com by `walkan...@gmail.com` on 4 Jun 2008 at 5:43

Start by locating ReflexUnit-Beta1.swc and the FlexViewerWatcherSetupUtil/PropertyWatcher path named in the stack trace, then reproduce the failure with Flex SDK 3. Done means the sample application runs without the ArgumentError #1063 method-signature mismatch.

Written by the indexing model from the issue text.