Bug 137315 [Dialogs] Doubleclickable area to restore dialog size is often very small
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/Dialog.java
* dialog bounds. This strategy is ignored if the implementer does not also
	 * specify the dialog settings for storing the bounds in
	 * Dialog.getDialogBoundsSettings().
	 * 
	 * @return the constant describing the strategy for persisting the dialog
	 *         bounds.
	 * 
	 * @since 3.2
	 * @see Dialog#DIALOG_PERSISTLOCATION
	 * @see Dialog#DIALOG_PERSISTSIZE
	 * @see Dialog#getDialogBoundsSettings()
	 */
	protected int getDialogBoundsStrategy() {
		return DIALOG_PERSISTLOCATION | DIALOG_PERSISTSIZE;
	}
	/**
	 * Saves the bounds of the shell in the appropriate dialog settings. The
	 * bounds are recorded relative to the parent shell, if there is one, or
	 * display coordinates if there is no parent shell.
	 * 
	 * @param shell
	 *            The shell whose bounds are to be stored
	 * 
	 * @since 3.2
	 */
	private void saveDialogBounds(Shell shell) {		
		IDialogSettings settings = getDialogBoundsSettings();
		if (settings != null) {
			Point shellLocation = shell.getLocation();
			Point shellSize = shell.getSize();