Bug 201368 Support "Not In" operator in filter list
Description: After we support "IN" filter we should also support the "Not In" filter. Data part has already support the "Not In" filter, so hope model can support that operator in the filter operator list. Regards!
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleUtil.java
{
		/**
		 * Wirte the action in to a stream.
		 * 
		 * @param os
		 * @param action
		 * @throws IOException
		 */
		public void write( OutputStream os, Action action ) throws IOException
		{
			writer = new SectionXMLWriter( os, UnicodeUtil.SIGNATURE_UTF_8 );
			writeAction( action, IImageItemModel.ACTION_PROP );
		}
		protected Module getModule( )
		{
			return null;
		}
	}
	/**
	 * Justifies whether a given input stream is a valid report design.
	 * 
	 * @param sessionHandle
	 *            the current session of the report design