Bug 32053 [Import/Export] Need busy cursor when loading page
M5 build - start eclipse in Resource perspective - File / Import - double-click on External Plug-ins and Fragments - it takes a while to load, but there is no busy cursor
bundles/org.eclipse.jface/src/org/eclipse/jface/wizard/WizardDialog.java
* @param enabled <code>true</code> to enable the control, 
	 *   and <code>false</code> to disable it
	 * @see #restoreEnableStateAndSet
	 */
	private void saveEnableStateAndSet(
		Control w,
		Map h,
		String key,
		boolean enabled) {
		if (w != null) {
			h.put(key, new Boolean(w.isEnabled()));
			w.setEnabled(enabled);
		}
	}
	/**
	 * Captures and returns the enabled/disabled state of the wizard dialog's
	 * buttons and the tree of controls for the currently showing page. All
	 * these controls are disabled in the process, with the possible excepton of
	 * the Cancel button.
	 *
	 * @param keepCancelEnabled <code>true</code> if the Cancel button should
	 *   remain enabled, and <code>false</code> if it should be disabled
	 * @return a map containing the saved state suitable for restoring later
	 *   with <code>restoreUIState</code>
	 * @see #restoreUIState
	 */
	private Map saveUIState(boolean keepCancelEnabled) {
		Map savedState = new HashMap(10);
		saveEnableStateAndSet(backButton, savedState, "back", false); 
		saveEnableStateAndSet(nextButton, savedState, "next", false);