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/SourceContainerWorkbookPage.java
if (!modifiedEntries.isEmpty()) {
			String title= NewWizardMessages.getString("SourceContainerWorkbookPage.exclusion_added.title"); 
			String message= NewWizardMessages.getString("SourceContainerWorkbookPage.exclusion_added.message"); 
			MessageDialog.openInformation(getShell(), title, message);
		}
	}
	
	private CPListElement[] openSourceContainerDialog(CPListElement existing) {
		
		Class[] acceptedClasses= new Class[] { IProject.class, IFolder.class };
		List existingContainers= getExistingContainers(null);
		
		IProject[] allProjects= fWorkspaceRoot.getProjects();
		ArrayList rejectedElements= new ArrayList(allProjects.length);
		IProject currProject= fCurrJProject.getProject();
		for (int i= 0; i < allProjects.length; i++) {
			if (!allProjects[i].equals(currProject)) {
				rejectedElements.add(allProjects[i]);
			}
		}
		ViewerFilter filter= new TypedViewerFilter(acceptedClasses, rejectedElements.toArray());
		
		ILabelProvider lp= new WorkbenchLabelProvider();
		ITreeContentProvider cp= new BaseWorkbenchContentProvider();
		String title= (existing == null) ? NewWizardMessages.getString("SourceContainerWorkbookPage.ExistingSourceFolderDialog.new.title") : NewWizardMessages.getString("SourceContainerWorkbookPage.ExistingSourceFolderDialog.edit.title"); 
		String message= (existing == null) ? NewWizardMessages.getString("SourceContainerWorkbookPage.ExistingSourceFolderDialog.new.description") : NewWizardMessages.getString("SourceContainerWorkbookPage.ExistingSourceFolderDialog.edit.description"); 
		MultipleFolderSelectionDialog dialog= new MultipleFolderSelectionDialog(getShell(), lp, cp);
		dialog.setExisting(existingContainers.toArray());
		dialog.setTitle(title);
		dialog.setMessage(message);