Bug 192789 Support to render reportlet using bookmark in frameset servlet.
Description: Support to render reportlet using bookmark in frameset servlet. At present, only run and preview servlet support __isreportlet&__bookmark to generate reportlet.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ReportEngineService.java
* @param columns
	 * @param filters
	 * @param locale
	 * @param outputStream
	 * @param encoding
	 * @throws RemoteException
	 */
	public void extractData( IReportDocument document, String resultSetName,
			Collection columns, Locale locale, OutputStream outputStream,
			String encoding ) throws RemoteException
	{
		extractData( document, resultSetName, columns, locale, outputStream,
				encoding, ParameterAccessor.DEFAULT_SEP );
	}
	/**
	 * Extract data.
	 * 
	 * @param document
	 * @param resultSetName
	 * @param id
	 * @param columns
	 * @param filters
	 * @param locale
	 * @param outputStream
	 * @param encoding
	 * @param sep
	 * @throws RemoteException
	 */
	public void extractData( IReportDocument document, String resultSetName,
			Collection columns, Locale locale, OutputStream outputStream,