Bug 197228 Need updaet createdBy info when serialize the module
When open module, designer will pass the property map which contains the createdBy info. this info should be retained by moduleHandle and then be updated and written when doing serialization. Note if this info is null, model should not update it during serialization. This could happen for api users or third-party designer. For BIRT designer, it will guarantee this value always not null.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
* @param fatalException
	 *            the fatal exception to set
	 */
	protected void setFatalException( Exception fatalException )
	{
		this.fatalException = fatalException;
	}
	/**
	 * Returns the system id of the module. It is the relative URI path of the
	 * module.
	 * 
	 * @return the system id of the module
	 */
	public URL getSystemId( )
	{
		return systemId;
	}
	/**
	 * Sets the system id of the module. It is the relative URI path of the
	 * module.
	 * 
	 * @param systemId
	 *            the system id of the module
	 * 
	 */
	public void setSystemId( URL systemId )
	{
		this.systemId = systemId;
	}
	/**