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
IGetParameterDefinitionTask task, Map configVars, Locale locale )
	{
		assert task != null;
		HashMap params = new HashMap( );
		Collection parameterList = task.getParameterDefns( false );
		for ( Iterator iter = parameterList.iterator( ); iter.hasNext( ); )
		{
			IScalarParameterDefn parameterObj = (IScalarParameterDefn) iter
					.next( );
			String paramValue = null;
			Object paramValueObj = null;
			
			
			String paramName = parameterObj.getName( );
			String format = parameterObj.getDisplayFormat( );
			
			ReportParameterConverter converter = new ReportParameterConverter(
					format, locale );
			if ( ParameterAccessor.isReportParameterExist( request, paramName ) )
			{
				
				paramValue = ParameterAccessor.getReportParameter( request,
						paramName, paramValue );
				paramValueObj = converter.parse( paramValue, parameterObj
						.getDataType( ) );
			}
			else if ( ParameterAccessor.isDesigner( request )
					&& configVars.containsKey( paramName ) )
			{