Bug 65243 Build path dialog: Disable 'Add folder' when ex-/inclusion selected
RC1 On the build path dialog it would be better to disable 'Add folder' when ex-/inclusion selected to avoid confusion to what 'Add folder is releated'
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/LibrariesWorkbookPage.java
containerPath= ((CPListElement) parentContainer).getPath();
				applyChanges= true;
			}
			Shell shell= getShell();
			IClasspathEntry result= BuildPathDialogAccess.configureSourceAttachment(shell, selElement.getClasspathEntry());
			if (result != null) {
				if (applyChanges) {
					try {
						IRunnableWithProgress runnable= SourceAttachmentBlock.getRunnable(shell, result, fCurrJProject, containerPath);
						PlatformUI.getWorkbench().getProgressService().run(true, true, runnable);
					} catch (InvocationTargetException e) {
						String title= NewWizardMessages.getString("LibrariesWorkbookPage.configurecontainer.error.title"); 
						String message= NewWizardMessages.getString("LibrariesWorkbookPage.configurecontainer.error.message"); 
						ExceptionHandler.handle(e, shell, title, message);
					} catch (InterruptedException e) {
						return;
					}
				}
				selElement.setAttribute(CPListElement.SOURCEATTACHMENT, result.getSourceAttachmentPath());
				fLibrariesList.refresh();
				fClassPathList.refresh(); 
			}
		} else if (key.equals(CPListElement.JAVADOC)) {
			CPListElement selElement= elem.getParent();
			URL initialLocation= (URL) selElement.getAttribute(CPListElement.JAVADOC);
			String elementName= new CPListLabelProvider().getText(selElement);
			
			URL[] result= BuildPathDialogAccess.configureJavadocLocation(getShell(), elementName, initialLocation);
			if (result != null) {
				selElement.setAttribute(CPListElement.JAVADOC, result[0]);