Bug 12053 Allow mutli selection for all browsers
This should clear downstream
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/browsing/JavaBrowsingPart.java
if (fRefreshAction.isEnabled())
				fRefreshAction.run();
		} else if (key == SWT.F4) {
			OpenTypeHierarchyUtil.open(getSelectionProvider().getSelection(), getSite().getWorkbenchWindow());
		} else if (key == SWT.F3) {
			fOpenCUAction.update();
			if (fOpenCUAction.isEnabled())
				fOpenCUAction.run();
		}
		else if (event.character == SWT.DEL) {
			fDeleteAction.update();
			if (fDeleteAction.isEnabled())
				fDeleteAction.run();
		}
	}
	
	
	
	protected void fillToolBar(IToolBarManager tbm) {
	}	
	/**
	 * Called when the context menu is about to open.
	 * Override to add your own context dependent menu contributions.
	 */
	public void menuAboutToShow(IMenuManager menu) {
		JavaPlugin.createStandardGroups(menu);
		IStructuredSelection selection= (IStructuredSelection) fViewer.getSelection();
		
		fPropertyDialogAction.selectionChanged(selection);
		MenuManager newMenu= new MenuManager(PackagesMessages.getString("PackageExplorer.new"));