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
{
			task = getParameterDefinitionTask( design, options );
			if ( task != null )
				defaultValue = task.getDefaultValue( parameterName );
		}
		finally
		{
			if ( task != null )
				task.close( );
		}
		return defaultValue;
	}
	/**
	 * @see org.eclipse.birt.report.service.api.IViewerReportService#setContext(java.lang.Object,
	 *      org.eclipse.birt.report.service.api.InputOptions)
	 */
	public void setContext( Object context, InputOptions options )
			throws BirtException
	{
		HttpServletRequest request = (HttpServletRequest) options
				.getOption( InputOptions.OPT_REQUEST );
		ServletContext servletContext = (ServletContext) context;
		ReportEngineService.getInstance( ).setEngineContext( servletContext,
				request );
	}
	/**
	 * Returns report runnable object
	 * 
	 * @param design
	 * @param moduleOptions