Bug 7235 [Contributions] Need dispose() for action delegates
bundles/org.eclipse.jface/src/org/eclipse/jface/action/MenuManager.java
/**
 * Initializes the menu control.
 */
private void initializeMenu() {
	menu.addMenuListener(new MenuAdapter() {
		public void menuShown(MenuEvent e) {
			handleAboutToShow();
		}	
		public void menuHidden(MenuEvent e) {
		}	
	});
	markDirty();
	
	
}
/* (non-Javadoc)
 * Method declared on IContributionItem.
 */
public boolean isDynamic() {
	return false;
}
/**
 * Returns whether this menu should be enabled or not.
 * Used to enable the menu item containing this menu when it is realized as a sub-menu.
 * <p>
 * The default implementation of this framework method
 * returns <code>true</code>. Subclasses may reimplement.
 * </p>
 *
 * @return <code>true</code> if enabled, and