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/WizardDialog.java
/**	
 * Shows the starting page of the wizard.
 */
private void showStartingPage() {
	currentPage = wizard.getStartingPage();
	if (currentPage == null) {
		
		return;
	}
	
	if (currentPage.getControl() == null) {
		currentPage.createControl(pageContainer);
		
		
		Assert.isNotNull(currentPage.getControl());
		
		
	}
			
	
	currentPage.setVisible(true);
	
	update();
}
/**
 * A long running operation triggered through the wizard
 * was stopped either by user input or by normal end.
 * Hides the progress monitor and restores the enable state
 * wizard's buttons and controls.
 *