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
String filters[]= new String[children.length];
			for (int i = 0; i < children.length; i++) {
				filters[i]= children[i].getString(TAG_ELEMENT);
			}
			getPatternFilter().setPatterns(filters);
		} else {
			getPatternFilter().setPatterns(new String[0]);
		}
		
		String show= fMemento.getString(TAG_SHOWLIBRARIES);
		if (show != null)
			getLibraryFilter().setShowLibraries(show.equals("true")); 
		else 
			initLibraryFilterFromPreferences();		
		
		
		String showbin= fMemento.getString(TAG_SHOWBINARIES);
		if (showbin != null)
			getBinaryFilter().setShowBinaries(show.equals("true")); 
		else 
			initBinaryFilterFromPreferences();		
	}
	
	void initFilterFromPreferences() {
		initBinaryFilterFromPreferences();
		initLibraryFilterFromPreferences();
	}
	void initLibraryFilterFromPreferences() {
		JavaPlugin plugin= JavaPlugin.getDefault();
		boolean show= plugin.getPreferenceStore().getBoolean(TAG_SHOWLIBRARIES);