Bug 155943 "Restore Properties" is always enabled for extended chart
Steps to reproduce: 1.New a report, includes a library, extends lib.chart 2.Choose the chart Expected result: "Restore Properties" is disabled untill set/change any local properties for the chart Actual result: "Restore Properties" is always enabled
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
* @param propName
	 *            the tag name for Extended property list.
	 */
	protected void writeExtendedProperties( List properties, String propName )
	{
		if ( properties != null && properties.size( ) != 0 )
		{
			writer.startElement( DesignSchemaConstants.LIST_PROPERTY_TAG );
			writer.attribute( DesignSchemaConstants.NAME_ATTRIB, propName );
			Iterator iter = properties.iterator( );
			while ( iter.hasNext( ) )
			{
				ExtendedProperty property = (ExtendedProperty) iter.next( );
				writer.startElement( DesignSchemaConstants.EX_PROPERTY_TAG );
				if ( property.getName( ) != null )
				{
					writer.startElement( DesignSchemaConstants.NAME_ATTRIB );
					writer.text( property.getName( ) );
					writer.endElement( );
				}
				if ( property.getValue( ) != null )
				{
					writer.startElement( DesignSchemaConstants.VALUE_TAG );
					writer.text( property.getValue( ) );
					writer.endElement( );
				}
				writer.endElement( );
			}
			writer.endElement( );
		}