Bug 175587 Consolidate IReportEngine.shutdown() and destroy() methods
Interface IReportEngine has two methods, shutdown() and destroy(), that appear to have identical functionality according to their JavaDoc comments. However as of 2.1.2 build destroy() is the method that actually cleans up the resources; shutdown() does not do anything useful. We need to do the following: (1) Deprecate method shutdown() (2) Make shutdown() call destroy() internally so that older code that uses that method can function properly.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/IReportEngine.java
*            the report document name. report document is an archive in
	 *            BIRT.
	 * @param options
	 * 				Map defins the options used to parse the design file.
	 * @return A handle to the report document
	 * @throws EngineException
	 *             throwed when the report document archive does not exist, or
	 *             the file is not a valud report document
	 */
	public IReportDocument openReportDocument( String systemId,
			String fileName, Map options ) throws EngineException;
	
	public IReportDocument openReportDocument( String systemId,
			IDocArchiveReader archiveReader, Map options )
			throws EngineException;
	/**
	 * creates a task that allows data extraction from a report document
	 * 
	 * @param reportDocument
	 *            a handle to an IReportDocument object
	 * @return a task that renders a report to an output format
	 */
	public IDataExtractionTask createDataExtractionTask(
			IReportDocument reportDocument );
	/**
	 * shut down the engine, release all the resources.
	 */
	public void shutdown( );
}