First working JFace example

[Bill Baxter]

Frank Benoit wrote:
> Now the JFace stuff compiles with the available dwt on win/linux.

Cool.  I don't really know what it is, but it seems to be all the rage 
among SWT coders.

> dwt-samples/jface/ActionAndStatusbar
> is a first showcase.
> 
> 
> More example code as showcases and testcases is very welcome.
> Snippets can be found here:
> http://wiki.eclipse.org/index.php/JFaceSnippets

To try this out we need to update both dwt-samples and dwt-addons?

> Due to a compiler bug (#1978), the tango collection need a fix to make 
> JFace not going into a endless loop.
> 
> - tango.util.collection.mode.View

Should be .model.View, not .mode.View right?

>   line 39  : public Dispenser!(T) duplicate();
>   change to: public View!(T) duplicate();
> 
> 
> - tango.util.collection.mode.Set
>   line 37 add:
>   public Set!(T) duplicate();
>   public alias duplicat dup;

Should be alias duplicate not alias duplicat, right?