Bug 262606 [CommonNavigator] Up button after "go into" has bad tooltip text
I20090127-0100 1) Select a Java project 2) right-click, select "Go Into" 3) Hover over the Up button, the tooltip text is impressive
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/navigator/CommonNavigator.java
* method.
	 * </p>
	 * 
	 * @see org.eclipse.ui.part.ViewPart#saveState(org.eclipse.ui.IMemento)
	 */
	public void saveState(IMemento aMemento) {
		aMemento.putInteger(LINKING_ENABLED, (isLinkingEnabled) ? 1 : 0);
		super.saveState(aMemento);
		commonManager.saveState(aMemento);
		commonViewer.getNavigatorContentService().saveState(aMemento);
	}
	/**
	 * <p>
	 * Force the workbench to focus on the Common Navigator tree.
	 * </p>
	 * 
	 * @see org.eclipse.ui.part.WorkbenchPart#setFocus()
	 */
	public void setFocus() {
		if (commonViewer != null) {
			commonViewer.getTree().setFocus();
		}
	}
	/**
	 * <p>
	 * Set the selection to the Common Navigator tree, and expand nodes if
	 * necessary. Use caution when invoking this method as it can cause
	 * Navigator Content Extensions to load, thus causing plugin activation.
	 * </p>
	 *