Bug 198562 [Contributions] Change ActionContributionItem + CommandContributionItem to use event coordinates
In order to enable RTL support on Linux, we have changed the recommended way of determining the location of a Toolitem pop up menu. Attaching a patch for UI.
bundles/org.eclipse.jface/src/org/eclipse/jface/action/ActionContributionItem.java
* external source.
	 */
	private final IPropertyChangeListener actionTextListener = new IPropertyChangeListener() {
		/**
		 * @see IPropertyChangeListener#propertyChange(PropertyChangeEvent)
		 */
		public void propertyChange(PropertyChangeEvent event) {
			update(event.getProperty());
		}
	};
	/**
	 * Remembers all images in use by this contribution item
	 */
	private LocalResourceManager imageManager;
	/**
	 * Listener for SWT button widget events.
	 */
	private Listener buttonListener;
	/**
	 * Listener for SWT menu item widget events.
	 */
	private Listener menuItemListener;
	/**
	 * Listener for action property change notifications.
	 */
	private final IPropertyChangeListener propertyListener = new IPropertyChangeListener() {
		public void propertyChange(PropertyChangeEvent event) {
			actionPropertyChange(event);
		}
	};