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
}
		config.setLogConfig( logDirectory, level );
		
		String scriptLibDir = servletConfig.getServletContext( )
				.getInitParameter( ParameterAccessor.INIT_PARAM_SCRIPTLIB_DIR );
		if ( scriptLibDir == null || scriptLibDir.trim( ).length( ) <= 0
				|| ParameterAccessor.isRelativePath( scriptLibDir ) )
		{
			scriptLibDir = servletConfig.getServletContext( ).getRealPath(
					"/scriptlib" ); 
		}
		ArrayList jarFileList = new ArrayList( );
		if ( scriptLibDir != null )
		{
			File dir = new File( scriptLibDir );
			getAllJarFiles( dir, jarFileList );
		}
		String scriptlibClassPath = ""; 
		for ( int i = 0; i < jarFileList.size( ); i++ )
			scriptlibClassPath += EngineConstants.PROPERTYSEPARATOR
					+ ( (File) jarFileList.get( i ) ).getAbsolutePath( );
		if ( scriptlibClassPath.startsWith( EngineConstants.PROPERTYSEPARATOR ) )
			scriptlibClassPath = scriptlibClassPath
					.substring( EngineConstants.PROPERTYSEPARATOR.length( ) );
		System.setProperty( EngineConstants.WEBAPP_CLASSPATH_KEY,
				scriptlibClassPath );
		config.setEngineHome( "" ); 
	}
	/**
	 * Get engine instance.