Bug 98472 New project wizard: second page remove from class path should ask for removal of folder when linked
RC1 - create a new project - switch to the second page - link in additional source observe: there is no way to unlink the addtional source We should offer to unlink the folder when the folder is removed from the build path again.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/newsourcepage/BuildPathAction.java
* after having initialized this class. 
	 * 
	 * @param operation the operation to be used in this action
	 * @param imageDescriptor the image descriptor for the icon
	 * @param disabledImageDescriptor the image descriptor for the disabled icon
	 * @param text the text to be set as label for the action
	 * @param tooltip the text to be set as tool tip
	 */
	public void initialize(ClasspathModifierOperation operation, ImageDescriptor imageDescriptor, ImageDescriptor disabledImageDescriptor, String text, String tooltip) {
		fOperation= operation;
		setImageDescriptor(imageDescriptor);
		setDisabledImageDescriptor(disabledImageDescriptor);
		setText(text);
		setToolTipText(tooltip);
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jdt.ui.actions.SelectionDispatchAction#run()
	 */
	public void run() {
		try {
			IRunnableWithProgress runnable= new IRunnableWithProgress() {
				public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
					fOperation.run(monitor);
				}
			};
			PlatformUI.getWorkbench().getProgressService().run(true, false, runnable);
		} catch (InvocationTargetException e) {
			ExceptionHandler.handle(e, getShell(), Messages.format(NewWizardMessages.HintTextGroup_Exception_Title, 
					fOperation.getName()), e.getMessage());
		} catch (InterruptedException e) {