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
* 
	 */
	public final void openFiltersDialog() {
		DialogMarkerFilter dialog = createFiltersDialog();
		if (dialog.open() == Window.OK) {
			MarkerFilter[] result = dialog.getFilters();
			if (result == null) {
				return;
			}
			if (result.length == 0) {
				setFilters(new MarkerFilter[] { createFilter(MarkerMessages.MarkerFilter_defaultFilterName) });
			} else {
				setFilters(result);
			}
			updateForFilterChanges();
			refreshFilterMenu();
			refreshViewer();
		}
	}
	/**
	 * Refresh the contents of the viewer.
	 */
	public void refreshViewer() {
		scheduleMarkerUpdate(Util.SHORT_DELAY);
	}
	/**
	 * Set the filters to newFilters.
	 * 
	 * @param newFilters
	 */