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
{
		InputStream is = null;
		String streamToOpen = StringUtil.trimString( strData );
		if ( streamToOpen != null )
		{
			try
			{
				is = new ByteArrayInputStream( streamToOpen.getBytes( UnicodeUtil.SIGNATURE_UTF_8 ) );
			}
			catch ( UnsupportedEncodingException e )
			{
				assert false;
			}
		}
		return deserializeAction( is, element );
	}
	/**
	 * Serialize an action into a stream, the stream is in UTF-8 encoding.
	 * 
	 * @param action
	 *            a given action structure.
	 * @return an output stream represent the action xml data.
	 * @throws IOException
	 *             if I/O exception occur when writing the stream.
	 */
	public static String serializeAction( ActionHandle action )
			throws IOException
	{
		ByteArrayOutputStream os = new ByteArrayOutputStream( );
		ActionWriter writer = new ActionWriter( );