[Pharo-project] I don't agree with DummyXXX

From what I understand, Dummy means something different. I have using that for class names. More accurate names can be found. I would rename:

DummyUIManager -> HeadlessUIManager DummySystemProgressItem -> NullSystemProgressItem DummySoundSystem -> NullSoundSystem what do you think? do you have better names? -- Mariano http://marianopeck.wordpress.com