Bug 197261 [2.2.1]The report that contain library xtab and set filter cannot be run
Description: [2.2.1]The report that contain library xtab and set filter cannot be run Step: 1.New a library and add a xtab 2.New a report and use the library 3.Drop the xtab from library explorer into layout 4.Set the filter on the xtab that is in report 5.Preview Actual result: It pop up an error said that the report cannot be run
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
* 
	 * @param obj
	 *            the element that has user properties.
	 */
	protected void writeUserPropertyValues( DesignElement obj )
	{
		List userProps = obj.getUserProperties( );
		if ( userProps == null || userProps.size( ) == 0 )
			return;
		Iterator iter = userProps.iterator( );
		while ( iter.hasNext( ) )
		{
			UserPropertyDefn propDefn = (UserPropertyDefn) iter.next( );
			property( obj, propDefn.getName( ) );
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.elements.ElementVisitor#visitModule(org.eclipse.birt.report.model.core.Module)
	 */
	public void visitModule( Module obj )
	{
		if ( markLineNumber )
			obj.initLineNoMap( );
		markLineNumber( obj );
		writer.attribute( DesignSchemaConstants.XMLNS_ATTRIB,
				DEFAULT_NAME_SPACE );
		writer.attribute( DesignSchemaConstants.VERSION_ATTRIB,
				DesignSchemaConstants.REPORT_VERSION );