Bug 148181 Support deleting a directory from report document
Now Engine supports deleting a file from report document, and it would be nicer if deleting a directory could be also supported.
testsuites/org.eclipse.birt.report.tests.engine/src/org/eclipse/birt/report/tests/engine/api/RenderFolderDocumentTest.java
private String separator =System.getProperty("file.separator");
	private String INPUT = getClassFolder( ) + separator + INPUT_FOLDER + separator ;
	private String OUTPUT = getClassFolder( ) + separator + OUTPUT_FOLDER + separator ;
	private String folderArchive, htmlOutput;
	private IReportDocument reportDoc;
	private IRenderTask renderTask;
	private IRenderOption htmlOption, pdfOption;
	
	public RenderFolderDocumentTest(String name) {
		super(name);
	}
	public static Test Suite() {
		return new TestSuite(RenderTaskTest.class);
	}
	
	protected void setUp() throws Exception {
		super.setUp();