Bug 168304 Context root issue when set to other BIRT Web Project.[0603]
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/servlet/BirtEngineServlet.java
return new BirtContext( request, response );
	}
	/**
	 * Local authentication.
	 * 
	 * @param request
	 *            incoming http request
	 * @param response
	 *            http response
	 * @return
	 */
	protected boolean __authenticate( HttpServletRequest request,
			HttpServletResponse response )
	{
		return true;
	}
	/**
	 * Local do get.
	 */
	protected void __doGet( IContext context ) throws ServletException,
			IOException, BirtException
	{
		ViewerAttributeBean bean = (ViewerAttributeBean) context.getBean( );
		assert bean != null;
		if ( IBirtConstants.SERVLET_PATH_PREVIEW.equalsIgnoreCase( context
				.getRequest( ).getServletPath( ) )
				&& ( bean.isMissingParameter( ) || bean
						.isForceParameterPrompting( ) ) )
		{
			requester.service( context.getRequest( ), context.getResponse( ) );