Bug 315281 update copyrights for 3.6
bundles/org.eclipse.core.databinding.property/src/org/eclipse/core/internal/databinding/property/set/SimplePropertyObservableSet.java
import org.eclipse.core.databinding.observable.set.AbstractObservableSet;
import org.eclipse.core.databinding.observable.set.SetDiff;
import org.eclipse.core.databinding.property.INativePropertyListener;
import org.eclipse.core.databinding.property.IProperty;
import org.eclipse.core.databinding.property.IPropertyObservable;
import org.eclipse.core.databinding.property.ISimplePropertyListener;
import org.eclipse.core.databinding.property.SimplePropertyEvent;
import org.eclipse.core.databinding.property.set.SimpleSetProperty;
/**
 * @since 1.2
 * 
 */
public class SimplePropertyObservableSet extends AbstractObservableSet
		implements IPropertyObservable {
	private Object source;
	private SimpleSetProperty property;
	private volatile boolean updating = false;
	private volatile int modCount = 0;
	private INativePropertyListener listener;
	private Set cachedSet;
	private boolean stale;
	/**
	 * @param realm
	 * @param source
	 * @param property
	 */
	public SimplePropertyObservableSet(Realm realm, Object source,
			SimpleSetProperty property) {
		super(realm);
		this.source = source;