Bug 115630 [Markers] New markerSupport features are not dynamic
M3 We need to add suites and test the the category support is dynamic.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerSupportRegistry.java
IExtensionTracker tracker = PlatformUI.getWorkbench()
				.getExtensionTracker();
		IExtensionPoint point = Platform.getExtensionRegistry()
				.getExtensionPoint(IDEWorkbenchPlugin.IDE_WORKBENCH,
						MARKER_SUPPORT);
		if (point == null)
			return;
		IExtension[] extensions = point.getExtensions();
		
		for (int i = 0; i < extensions.length; i++) {
			IExtension extension = extensions[i];
			processExtension(tracker, extension);
		}
		tracker.registerHandler(this, ExtensionTracker
				.createExtensionPointFilter(point));
	}
	/**
	 * Process the extension and register the result with the tracker.
	 * 
	 * @param tracker
	 * @param extension
	 */
	private void processExtension(IExtensionTracker tracker,
			IExtension extension) {
		IConfigurationElement[] elements = extension.getConfigurationElements();
		for (int j = 0; j < elements.length; j++) {
			IConfigurationElement element = elements[j];
			if (element.getName().equals(PROBLEM_FILTER)) {
				ProblemFilter filter = newFilter(element);
				registeredFilters.add(filter);