Bug 138828 Export data column are disordered
Steps to reproduce: 1.Add a sample data source and a data set with table "CUSTOMERS" 2.Preview in Web Viewer 3.Click "Export data", choose columns "CUSTOMERNAME","PHONE","CITY","STATE" to be exported, click "OK" Expected result: The exported columns is alphabetic order or the same order as selected columns Actual result: The exported columns is disordered. they are "STATE","CITY","CUSTOMERNAME","PHONE".
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ReportEngineService.java
}
	/**
	 * Create HTML render context.
	 * 
	 * @param svgFlag
	 * @param servletPath
	 * @return
	 */
	private HTMLRenderContext createHTMLrenderContext( boolean svgFlag,
			String servletPath )
	{
		HTMLRenderContext renderContext = new HTMLRenderContext( );
		renderContext.setImageDirectory( imageDirectory );
		renderContext.setBaseImageURL( contextPath + imageBaseUrl );
		if ( servletPath != null
				&& servletPath.length( ) > 0
				&& !servletPath
						.equalsIgnoreCase( IBirtConstants.SERVLET_PATH_PREVIEW ) )
		{
			renderContext.setBaseURL( this.contextPath + servletPath );
		}
		else
		{
			renderContext.setBaseURL( this.contextPath
					+ IBirtConstants.SERVLET_PATH_FRAMESET );
		}
		renderContext.setSupportedImageFormats( svgFlag
				? "PNG;GIF;JPG;BMP;SVG" : "PNG;GIF;JPG;BMP" ); 
		return renderContext;
	}