Bug 6125 JAR packager reports open files very late
1. edit in a file, don't save 2. open the JAR packager on it's project 3. enter all path, destination, name of jar packager description, etc 4. press finish: 'JAR creation failed: Unsaved Editors' 5. To save, I have to quit the wizard, save, open the wizard again and then enter all fields again - I should be allowed to create a JAR with unsaved editors - If not, there should be a dialog to allow saving
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/JarFileExportOperation.java
private JarPackage fJarPackage;
	private IFile[] fDescriptionFiles;
	private Shell fParentShell;
	private Map fJavaNameToClassFilesMap;
	private IContainer fClassFilesMapContainer;
	private MultiStatus fProblems;
	
	/**
	 * Creates an instance of this class.
	 *
	 * @param	jarPackage	the JAR package specification
	 * @param	parent	the parent for the dialog,
	 * 			or <code>null</code> if no dialog should be presented
	 */
	public JarFileExportOperation(JarPackage jarPackage, Shell parent) {
		this(parent);
		fJarPackage= jarPackage;
	}
	/**
	 * Creates an instance of this class.
	 *
	 * @param	descriptions	an array with JAR package descriptions
	 * @param	parent			the parent for the dialog,
	 * 			or <code>null</code> if no dialog should be presented
	 */
	public JarFileExportOperation(IFile[] descriptions, Shell parent) {
		this(parent);
		fDescriptionFiles= descriptions;
	}
	/**