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.jface.databinding/src/org/eclipse/jface/databinding/viewers/OrderedTreeNode.java
Object parent;
	/**
	 * List of child elements.
	 */
	private IObservableList children;
	private boolean hasPendingNode = false;
	private boolean isStale;
	private boolean listeningToChildren = false;
	private boolean prefetchEnqueued = false;
	/**
	 * @param treePath
	 * @param cp
	 */
	public OrderedTreeNode(TreePath treePath, OrderedTreeContentProvider cp) {
		this.element = treePath;
		this.contentProvider = cp;
		children = contentProvider.createChildList(treePath);
		if (children == null) {
			children = Observables.emptyObservableList(contentProvider.getKnownElements().getRealm());
			listeningToChildren = true;
		}
		hasPendingNode = children.isStale();
	}
	/**
	 * @param parent
	 */
	public void addParent(Object parent) {
		if (this.parent == null) {