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/databinding/Binding.java
}
	/**
	 * @return an observable value containing the current partial validation
	 *         status
	 */
	public abstract IObservableValue getPartialValidationStatus();
	/**
	 * @return an observable value containing the current validation status
	 */
	public abstract IObservableValue getValidationStatus();
	/**
	 * Removes a listener from the set of listeners that will be notified when
	 * an event occurs in the data flow pipeline that is managed by this
	 * Binding.
	 * 
	 * @param listener
	 *            The listener to remove.
	 */
	public void removeBindingEventListener(IBindingListener listener) {
		synchronized (bindingEventListeners) {
			bindingEventListeners.remove(listener);
		}
	}
	/**
	 * Updates the model's state from the target's state at the next reasonable
	 * opportunity. There is no guarantee that the state will have been updated
	 * by the time this call returns.
	 */
	public abstract void updateModelFromTarget();
	/**