Bug 215985 [Markers] Description column not sorting text
Currently the description column in the problems view is sorting by severity but not comparing Strings of equal severity.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/CachedMarkerBuilder.java
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;
	
	private long preBuildTime = -1;
	
	/**
	 * Create a new instance of the receiver. Update using the updateJob.
	 * 
	 * @param contentGenerator
	 * @param id
	 *            id of the view we are building for