Bug 136246 [regression]Export data exported error column name.
Description: Export data exported error column name. Steps to reproduce: 1. export data in a table, select several columns. Expected result: Selected column name and data are exported. Actual result: No matter what columns you selected, exported columns name always display columns beginning from the first, and then the second, and so on.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ReportEngineService.java
fault.setFaultString( e.getLocalizedMessage( ) );
			throw fault;
		}
		finally
		{
			runTask.close( );
		}
	}
	/**
	 * Render report page.
	 * 
	 * @param reportDocument
	 * @param pageNumber
	 * @param svgFlag
	 * @return report page content
	 * @throws RemoteException
	 */
	public ByteArrayOutputStream renderReport( HttpServletRequest request,
			IReportDocument reportDocument, long pageNumber,
			boolean masterPage, boolean svgFlag, List activeIds, Locale locale )
			throws RemoteException
	{
		assert reportDocument != null;
		assert pageNumber > 0 && pageNumber < reportDocument.getPageCount( );
		ByteArrayOutputStream out = new ByteArrayOutputStream( );
		
		IRenderTask renderTask = null;
		synchronized ( this.getClass( ) )
		{
			renderTask = engine.createRenderTask( reportDocument );