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
if (totalMarkers != preBusyMarkers) {
				getProgressService().warnOfContentChange();
			}
		}
	}
	/**
	 * Get the filters that are currently enabled.
	 * 
	 * @return MarkerFilter[]
	 */
	MarkerFilter[] getEnabledFilters() {
		if (enabledFilters == null) {
			Collection filters = findEnabledFilters();
			enabledFilters = new MarkerFilter[filters.size()];
			filters.toArray(enabledFilters);
		}
		return enabledFilters;
	}
	/**
	 * Find the filters enabled in the view.
	 * 
	 * @return Collection of MarkerFilter
	 */
	protected Collection findEnabledFilters() {
		MarkerFilter[] allFilters = getAllFilters();
		ArrayList filters = new ArrayList(0);
		for (int i = 0; i < allFilters.length; i++) {
			if (allFilters[i].isEnabled()) {
				filters.add(allFilters[i]);
			}