Bug 129812 [Markers] Enabling problem categorization per default
Build 3.2M5 Recent progress on problem categorization should be made more proeminent by enabling categorization by default. Similar to search view doing hierarchical presentation by default nowadays.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerView.java
* 
			 * @see org.eclipse.jface.util.IPropertyChangeListener#propertyChange(org.eclipse.jface.util.PropertyChangeEvent)
			 */
			public void propertyChange(PropertyChangeEvent event) {
				clearEnabledFilters();
				refreshViewer();
			}
		};
		return workingSetListener;
	}
	/**
	 * Schedule an update of the markers with a delay of time
	 * 
	 * @param time
	 */
	void scheduleMarkerUpdate(int time) {
		markerProcessJob.cancel();
		updateJob.cancel();
		getProgressService().schedule(markerProcessJob, time);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.views.markers.internal.TableView#createTree(org.eclipse.swt.widgets.Composite)
	 */
	protected Tree createTree(Composite parent) {
		Tree tree = super.createTree(parent);
		tree.addTreeListener(new TreeAdapter() {
			/*
			 * (non-Javadoc)