Bug 130631 Sliding job should be a system job
20050306 The title are dialog sliding job is showing up in my progress view. It should be a system job.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/TitleAreaDialog.java
* </p>
     * This method should be called after the dialog has been opened as it
     * updates the message label immediately.
     * 
     * @param newMessage
     *            the message, or <code>null</code> to clear the message
     */
    public void setMessage(String newMessage) {
        setMessage(newMessage, IMessageProvider.NONE);
    }
    /**
     * Sets the message for this dialog with an indication of what type of
     * message it is.
     * <p>
     * The valid message types are one of <code>NONE</code>,
     * <code>INFORMATION</code>,<code>WARNING</code>, or
     * <code>ERROR</code>.
     * </p>
     * <p>
     * Note that for backward compatibility, a message of type
     * <code>ERROR</code> is different than an error message (set using
     * <code>setErrorMessage</code>). An error message overrides the current
     * message until the error message is cleared. This method replaces the
     * current message and does not affect the error message.
     * </p>
     * 
     * @param newMessage
     *            the message, or <code>null</code> to clear the message
     * @param newType
     *            the message type