Bug 246105 [Dialogs] Title and description not layed out properly when title image is null
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/TitleAreaDialog.java
private static final int MIN_DIALOG_HEIGHT = 150;
	private Label titleLabel;
	private Label titleImageLabel;
	private Label bottomFillerLabel;
	private Label leftFillerLabel;
	private RGB titleAreaRGB;
	Color titleAreaColor;
	private String message = ""; 
	private String errorMessage;
	private Text messageLabel;
	private Composite workArea;
	private Label messageImageLabel;
	private Image messageImage;
	private boolean showingError = false;
	private boolean titleImageLargest = true;
	private int messageLabelHeight;
	private Image titleAreaImage;
	/**
	 * Instantiate a new title area dialog.
	 * 
	 * @param parentShell
	 *            the parent SWT shell
	 */
	public TitleAreaDialog(Shell parentShell) {
		super(parentShell);
	}
	/*
	 * @see Dialog.createContents(Composite)
	 */