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
ISelection selection = getViewer().getSelection();
		if (!(selection instanceof IStructuredSelection)) {
			return;
		}
		IStructuredSelection structured = (IStructuredSelection) selection;
		if (!Util.isSingleConcreteSelection(structured)) {
			return;
		}
		menu.add(new Separator(MENU_SHOW_IN_GROUP));
		
		showInMenu = new MenuManager(IDEWorkbenchMessages.Workbench_showIn);
		showInMenu.add(ContributionItemFactory.VIEWS_SHOW_IN
				.create(getViewSite().getWorkbenchWindow()));
		menu.appendToGroup(MENU_SHOW_IN_GROUP, showInMenu);
	}
	/**
	 * Refresh the marker counts
	 * 
	 * @param monitor
	 */
	void refreshMarkerCounts(IProgressMonitor monitor) {
		monitor.subTask(MarkerMessages.MarkerView_refreshing_counts);
		try {
			totalMarkers = MarkerList.compute(getMarkerTypes()).length;
		} catch (CoreException e) {
			Util.log(e);
			return;
		}
	}
	/**