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/action/StatusLineManager.java
if (statusLineExist())
		statusLine.setMessage(image, message);
}
/**
 * Returns whether the status line control is created
 * and not disposed.
 * 
 * @return <code>true</code> if the control is created
 *	and not disposed, <code>false</code> otherwise
 */
private boolean statusLineExist() {
	return statusLine != null && !statusLine.isDisposed(); 
}
/* (non-Javadoc)
 * Method declared on IContributionManager.
 */
public void update(boolean force) {
	
	
	
	if (isDirty() || force) {
		
		if (statusLineExist()) {
			statusLine.setRedraw(false);
	
			if (false) {	
				Control ws[]= statusLine.getChildren();
				for (int i= 0; i < ws.length; i++) {
					Control w= ws[i];
					Object data= w.getData();