Bug 167450 [DataBinding] Get rid of bind support factory magic
I finally realized that we don't need that other magic factory. I'll move fillBindSpecDefaults() and the methods it calls (createConverter, createValidator etc) to a new class DefaultBindSpec. Clients who want default validators and converters created for them just create a DefaultBindSpec as opposed to a (rather empty) BindSpec. I will also move the early type checking into DefaultBindSpec to make it optional as well.
bundles/org.eclipse.core.databinding/src/org/eclipse/core/internal/databinding/ListBinding.java
targetList.addListChangeListener(targetChangeListener);
		modelList.addListChangeListener(modelChangeListener);
		updateTargetFromModel();
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.internal.databinding.provisional.Binding#dispose()
	 */
	public void dispose() {
		targetList.removeListChangeListener(targetChangeListener);
		modelList.removeListChangeListener(modelChangeListener);
		super.dispose();
	}
	private final IListChangeListener targetChangeListener = new IListChangeListener() {
		public void handleListChange(IObservableList source, ListDiff diff) {
			if (updating) {
				return;
			}
			
			BindingEvent e = new BindingEvent(modelList, targetList, diff,
					BindingEvent.EVENT_COPY_TO_MODEL,
					BindingEvent.PIPELINE_AFTER_GET);
			if (failure(errMsg(fireBindingEvent(e)))) {
				return;
			}
			updating = true;
			try {