Bug 4373 Packages View - double clich doesn't expand two hiearchy levels
- enable: Show CU children in packages view - double click on CU observe: only one level gets expanded - now expand a node by clicking on the + observe: two levels get expanded
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerPart.java
getLibraryFilter().setShowLibraries(show);
	}
	void initBinaryFilterFromPreferences() {
		JavaPlugin plugin= JavaPlugin.getDefault();
		boolean showbin= plugin.getPreferenceStore().getBoolean(TAG_SHOWBINARIES);
		getBinaryFilter().setShowBinaries(showbin);
	}
	/**
	 * Updates the title text and title tool tip.
	 * Called whenever the input of the viewer changes.
	 */ 
	void updateTitle() {		
		Object input= getViewer().getInput();
		String viewName= getConfigurationElement().getAttribute("name"); 
		if (input == null
			|| (input instanceof IJavaModel)) {
			setTitle(viewName);
			setTitleToolTip(""); 
		} else {
			ILabelProvider labelProvider = (ILabelProvider) getViewer().getLabelProvider();
			String inputText= labelProvider.getText(input);
			String title= PackagesMessages.getFormattedString("PackageExplorer.argTitle", new String[] { viewName, inputText }); 
			setTitle(title);
			setTitleToolTip(getToolTipText(input));
		} 
	}
	
	/**
	 * Sets the decorator for the package explorer.
	 *