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
*/
	    public int marginWidth = 5;
	    /**
	     * The margin height; <code>5</code> pixels by default.
	     */
	    public int marginHeight = 5;
	    /**
	     * The minimum width; <code>0</code> pixels by default.
	     */
	    public int minimumWidth = 0;
	    /**
	     * The minimum height; <code>0</code> pixels by default.
	     */
	    public int minimumHeight = 0;
	    /**
		 * Creates new layout object.
		 *
		 * @param mw the margin width
		 * @param mh the margin height
		 * @param minW the minimum width
		 * @param minH the minimum height
		 */
		public PageContainerFillLayout(int mw, int mh, int minW, int minH) {
		    marginWidth = mw;
		    marginHeight = mh;
		    minimumWidth = minW;
		    minimumHeight = minH;
		}
		/* (non-Javadoc)
		 * Method declared on Layout.