Bug 63159 [Progress] Progress dialog "Run in Background" button does not resize with larger font
If you set the dialog font to something large, the "Run in background" button does not correctly resize.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/Dialog.java
* @param textValue
	 *            the original string or <code>null</code>
	 * @param control
	 *            the control the string will be displayed on
	 * @return the string to display, or <code>null</code> if null was passed
	 *         in
	 * 
	 * @since 3.0
	 */
	public static String shortenText(String textValue, Control control) {
		if (textValue == null)
			return null;
		GC gc = new GC(control);
		int maxWidth = control.getBounds().width - 5;
		if (gc.textExtent(textValue).x < maxWidth) {
			gc.dispose();
			return textValue;
		}
		int length = textValue.length();
		int pivot = length / 2;
		int start = pivot;
		int end = pivot + 1;
		while (start >= 0 && end < length) {
			String s1 = textValue.substring(0, start);
			String s2 = textValue.substring(end, length);
			String s = s1 + ELLIPSIS + s2;
			int l = gc.textExtent(s).x;
			if (l < maxWidth) {
				gc.dispose();
				return s;