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.ui.IViewPart#init(org.eclipse.ui.IViewSite,
	 *      org.eclipse.ui.IMemento)
	 */
	public void init(IViewSite site, IMemento memento) throws PartInitException {
		super.init(site, memento);
		IWorkbenchSiteProgressService progressService = getProgressService();
		if (progressService != null) {
			getProgressService().showBusyForFamily(
					ResourcesPlugin.FAMILY_MANUAL_BUILD);
			getProgressService().showBusyForFamily(
					ResourcesPlugin.FAMILY_AUTO_BUILD);
		}
		loadFiltersPreferences();
		ResourcesPlugin.getWorkspace().addResourceChangeListener(
				markerUpdateListener,
				IResourceChangeEvent.POST_CHANGE
						| IResourceChangeEvent.PRE_BUILD
						| IResourceChangeEvent.POST_BUILD);
	}
	/**
	 * Load the filters preference.
	 */
	private void loadFiltersPreferences() {
		String preference = IDEWorkbenchPlugin.getDefault()
				.getPreferenceStore().getString(getFiltersPreferenceName());
		if (preference.equals(IPreferenceStore.STRING_DEFAULT_DEFAULT)) {
			createDefaultFilter();
			return;
		}