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/BirtViewerReportService.java
import org.eclipse.birt.report.utility.BirtUtility;
import org.eclipse.birt.report.utility.ParameterAccessor;
/**
 * The main entrance for BIRT viewer to invoke report service APIs.
 */
public class BirtViewerReportService implements IViewerReportService
{
	/**
	 * Default constructor
	 * 
	 * @param context
	 */
	public BirtViewerReportService( ServletContext context )
	{
		try
		{
			ReportEngineService.initEngineInstance( context );
		}
		catch ( BirtException e )
		{
			e.printStackTrace( );
		}
	}
	/**
	 * @see org.eclipse.birt.report.service.api.IViewerReportService#runReport(org.eclipse.birt.report.service.api.IViewerReportDesignHandle,
	 *      java.lang.String, org.eclipse.birt.report.service.api.InputOptions,
	 *      java.util.Map)
	 */
	public String runReport( IViewerReportDesignHandle design,
			String outputDocName, InputOptions runOptions, Map parameters )