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
public DesignElement resolveElement( DesignElement element,
			PropertyDefn propDefn, IElementDefn elementDefn )
	{
		ElementRefValue refValue = nameHelper.resolve( element, propDefn,
				elementDefn );
		return refValue == null ? null : refValue.getElement( );
	}
	/**
	 * Resolves element with the given element name and name space.
	 * 
	 * @param elementName
	 *            name of the element
	 * @param nameSpace
	 *            name space
	 * @return the resolved element if the name can be resolved, otherwise,
	 *         return null.
	 */
	private DesignElement resolveNativeElement( String elementName,
			int nameSpace )
	{
		NameSpace namespace = nameHelper.getNameSpace( nameSpace );
		return namespace.getElement( elementName );
	}
	/**
	 * Sets the exceltion list into this module.
	 * 
	 * @param allExceptions
	 *            exception list to set
	 */
	protected void setAllExceptions( List allExceptions )