Bug 150601 Drillthrough link from pdf(frameset) should link to frameset servlet instead of run.
Description: Drillthrough link from pdf(frameset) should link to frameset servlet instead of run. Steps to reproduce: 1. New a report 2. Insert a label and define a drill through link to other report 3. Preview in Web viewer, click Print as PDF button in viewer toolbar 4. Click drill through link in pdf Expected result: Target report opens through frameset sevlet instead of run servlet. Because the pdf is displayed through frameset servlet. Actual result: Target report opened through run sevlet
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ReportEngineService.java
private HTMLRenderContext createHTMLrenderContext( boolean svgFlag,
			String servletPath )
	{
		HTMLRenderContext renderContext = new HTMLRenderContext( );
		renderContext.setImageDirectory( imageDirectory );
		renderContext.setBaseImageURL( contextPath + imageBaseUrl );
		if ( servletPath != null
				&& servletPath.length( ) > 0
				&& !servletPath
						.equalsIgnoreCase( IBirtConstants.SERVLET_PATH_PREVIEW ) )
		{
			renderContext.setBaseURL( this.contextPath + servletPath );
		}
		else
		{
			renderContext.setBaseURL( this.contextPath
					+ IBirtConstants.SERVLET_PATH_FRAMESET );
		}
		renderContext.setImageDirectory( imageDirectory );
		renderContext.setSupportedImageFormats( svgFlag
				? "PNG;GIF;JPG;BMP;SVG" : "PNG;GIF;JPG;BMP" ); 
		return renderContext;
	}
	/**
	 * Create PDF render context.
	 * 
	 * @return the PDF render context
	 */
	private PDFRenderContext createPDFrenderContext( )
	{