Bug 221521 [Markers] New markers API needs to be pared down
We have too much API in some of the new classes and they can be moved to internals
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerSupportRegistry.java
private static final String DESCRIPTION = "onDescription"; 
	/**
	 * The enabled attribute.
	 */
	public static final String ENABLED = "enabled"; 
	private static final Object ERROR = "ERROR";
	private static final Object INFO = "INFO";
	private static final Object WARNING = "WARNING";
	private static final String MARKER_ID = "markerId"; 
	/**
	 * The tag for the marker support extension
	 */
	public static final String MARKER_SUPPORT = "markerSupport";
	private static final Object ON_ANY = "ON_ANY"; 
	private static final Object ON_ANY_IN_SAME_CONTAINER = "ON_ANY_IN_SAME_CONTAINER";
	private static final Object ON_SELECTED_AND_CHILDREN = "ON_SELECTED_AND_CHILDREN";
	private static final Object ON_SELECTED_ONLY = "ON_SELECTED_ONLY";