Bug 29163 SafeRunnable needs to be accessible in JFace
We need to be able to access the SafeRunnable in JFace in order that some error protection can be added to preferences and properties dialogs.
bundles/org.eclipse.ui.workbench/extensions/org/eclipse/jface/wizard/WizardPage.java
* @param title the title for this wizard page,
 *   or <code>null</code> if none
 * @param titleImage the image descriptor for the title of this wizard page,
 *   or <code>null</code> if none
 */
protected WizardPage(String pageName, String title, ImageDescriptor titleImage) {
	super(title, titleImage);
	Assert.isNotNull(pageName); 
	name = pageName;
}
/**
 * The <code>WizardPage</code> implementation of this <code>IWizardPage</code>
 * method returns <code>true</code> if this page is complete (<code>isPageComplete</code>)
 * and there is a next page to flip to. Subclasses may override (extend or reimplement).
 *
 * @see #getNextPage
 * @see #isPageComplete
 */
public boolean canFlipToNextPage() {
	return isPageComplete() && getNextPage() != null;
}
/**
 * Returns the wizard container for this wizard page.
 *
 * @return the wizard container, or <code>null</code> if this
 *   wizard page has yet to be added to a wizard, or the
 *   wizard has yet to be added to a container
 */
protected IWizardContainer getContainer() {
	if (wizard == null)