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
} else
			filter.setSelectBySeverity(false);
		List selectedTypes = new ArrayList();
		IConfigurationElement[] types = element.getChildren(SELECTED_TYPE);
		for (int j = 0; j < types.length; j++) {
			String markerId = types[j].getAttribute(MARKER_ID);
			if (markerId != null) {
				MarkerType type = filter.getMarkerType(markerId);
				if (type == null) {
					IStatus status = new Status(IStatus.WARNING,
							IDEWorkbenchPlugin.IDE_WORKBENCH, IStatus.WARNING,
							MarkerMessages.ProblemFilterRegistry_nullType, null);
					IDEWorkbenchPlugin.getDefault().getLog().log(status);
				} else
					selectedTypes.add(type);
			}
		}
		
		if(selectedTypes.size() >0) 
			filter.setSelectedTypes(selectedTypes);
		return filter;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.runtime.dynamichelpers.IExtensionChangeHandler#removeExtension(org.eclipse.core.runtime.IExtension,
	 *      java.lang.Object[])
	 */
	public void removeExtension(IExtension extension, Object[] objects) {
		for (int i = 0; i < objects.length; i++) {