Bug 193875 we can not get an entir url by IHTMLActionHandler
we can not get an entir url by IHTMLActionHandler, so word emitter dose not write the right url. now hyperlink drill through in word emitter doesn't work.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ReportEngineService.java
*/
	private IReportEngine engine = null;
	/**
	 * Static engine config instance.
	 */
	private EngineConfig config = null;
	/**
	 * URL accesses images.
	 */
	private String imageBaseUrl = null;
	/**
	 * Image handler instance.
	 */
	private HTMLServerImageHandler imageHandler = null;
	/**
	 * Constructor.
	 * 
	 * @param servletContext
	 * @param config
	 */
	private ReportEngineService( ServletContext servletContext )
	{
		System.setProperty( "RUN_UNDER_ECLIPSE", "false" ); 
		if ( servletContext == null )
		{
			return;
		}
		
		ParameterAccessor.initParameters( servletContext );
		config = new EngineConfig( );