Bug 330326 Special Characters in ExcelEmitter not correct (Encoding?)
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/ExcelWriter.java
{
	private ExcelXmlWriter writer, tempWriter;
	private final ExcelContext context;
	private String tempFilePath;
	private int sheetIndex = 1;
	/**
	 * @param out
	 * @param context
	 * @param isRtlSheet
	 * @param pageHeader
	 * @param pageFooter
	 * @param orientation
	 */
	public ExcelWriter( ExcelContext context )
	{
		this.context = context;
	}
	public void end( ) throws IOException