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/StatusLine.java
* @param image the image to use, or <code>null</code> for no image
 * @param message the error message, or <code>null</code> for no error message
 */
public void setErrorMessage(Image image, String message) {
	fErrorText = trim(message);
	fErrorImage = image;
	updateMessageLabel();
}
	/**
	 * Applies the given font to this status line.
	 */
	public void setFont(Font font) {
		super.setFont(font);
		Control[] children= getChildren();
		for (int i= 0; i < children.length; i++) {
			children[i].setFont(font);
		}
	}
/**
 * Sets the message text to be displayed on the status line.
 * The image on the status line is cleared.
 * 
 * @param message the error message, or <code>null</code> for no error message
 */
public void setMessage(String message) {
	setMessage(null, message);
}
/**
 * Sets an image and a message text to be displayed on the status line.
 *