Bug 10654 Allow all jars in a folder to be added to build path
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/ClasspathVariablesPreferencePage.java
private VariableBlock fVariableBlock;
	
	/**
	 * Constructor for ClasspathVariablesPreferencePage
	 */
	public ClasspathVariablesPreferencePage() {
		setPreferenceStore(JavaPlugin.getDefault().getPreferenceStore());
		IStatusChangeListener listener= new IStatusChangeListener() {
			public void statusChanged(IStatus status) {
				updateStatus(status);
			}
		};
		fVariableBlock= new VariableBlock(listener, false, null);
		setDescription(JavaUIMessages.getString("ClasspathVariablesPreferencePage.description")); 
	}
	/**
	 * @see PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
	 */
	protected Control createContents(Composite parent) {
		WorkbenchHelp.setHelp(parent, IJavaHelpContextIds.CP_VARIABLES_PREFERENCE_PAGE);
		return fVariableBlock.createContents(parent);
	}
	
	/**
	 * @see IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
	 */
	public void init(IWorkbench workbench) {