Bug 214137 [Markers] Unbound system filters should be bound to problems view.
In 3.3 we supported systemFilters which are not currently picked up by the problems view. We should pick these up for compatiblity.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/CachedMarkerBuilder.java
private static final MarkerCategory[] EMPTY_CATEGORY_ARRAY = new MarkerCategory[0];
	private static final MarkerEntry[] EMPTY_ENTRY_ARRAY = new MarkerEntry[0];
	private static final int SHORT_DELAY = 100;
	
	private static final int TIME_OUT = 30000;
	private static final String TAG_FILTERS_SECTION = "filterGroups"; 
	private static final String TAG_GROUP_ENTRY = "filterGroup"; 
	private static final String TAG_AND = "andFilters"; 
	private static final String TAG_CATEGORY_GROUP = "categoryGroup"; 
	private static final String VALUE_NONE = "none"; 
	private static final String TAG_LEGACY_FILTER_ENTRY = "filter"; 
	private boolean building = true;
	
	private MarkerCategory[] categories;
	private MarkerMap currentMap = null;
	private MarkerContentGenerator generator; 
	
	
	private Job markerProcessJob;
	private IWorkbenchSiteProgressService progressService;
	private Job updateJob;
	private MarkerGroup categoryGroup;
	private Collection enabledFilters;
	private Collection filters;
	private IResource[] focusResources = MarkerSupportInternalUtilities.EMPTY_RESOURCE_ARRAY;
	private MarkerField[] visibleFields;
	private boolean andFilters = false;
	private MarkerComparator comparator;
	private IMemento memento;
	private String viewId;