Bug 270120 [CommonNavigator] tracing .options file *not* put in kit
And also adding some more tracing to help debug bindings
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/extensions/Binding.java
private final Map knownRootIds = new HashMap();
	protected Binding(String tagExtension) {
		TAG_EXTENSION = tagExtension;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.internal.navigator.extensions.INavigatorViewerDescriptor#isVisibleExtension(java.lang.String)
	 */
	boolean isVisibleExtension(String anExtensionId) {
		
		
		if (knownIds.containsKey(anExtensionId)) {
			
			return ((Boolean) knownIds.get(anExtensionId)).booleanValue();
		}
		
		for (Iterator itr = includePatterns.iterator(); itr.hasNext();) {
			Pattern pattern = (Pattern) itr.next();
			if (pattern.matcher(anExtensionId).matches()) {
				
				knownIds.put(anExtensionId, Boolean.TRUE);
				if (Policy.DEBUG_RESOLUTION) {
					System.out.println("Binding: " + TAG_EXTENSION +
							" to: " + anExtensionId); 
				}
				return true;
			}
		}
		for (Iterator itr = excludePatterns.iterator(); itr.hasNext();) {