Bug 35543 Export Jar takes forever [jar creation]
The "Saving Files..." part of the Export Jar wizard takes several minutes. This could be because the jar I am rebuilding in on my classpath... I do not know since the feedback only says "Saving Files...". So, perhaps only better feedback is needed if e is recompiling my project. Version: 2.1.0 Build id: 200303202147
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/JarFileExportOperation.java
* @return true if user pressed OK and save was successful.
	 */
	private boolean saveModifiedResourcesIfUserConfirms(IFile[] dirtyFiles) {
		if (confirmSaveModifiedResources(dirtyFiles))
			return saveModifiedResources(dirtyFiles);
		
		for (int i= 0; i < dirtyFiles.length; i++)
			addError(JarPackagerMessages.getFormattedString("JarFileExportOperation.fileUnsaved", dirtyFiles[i].getFullPath()), null); 
		return false;
	}
	/**
	 * Save all of the editors in the workbench.  
	 * 
	 * @return true if successful.
	 */
	private boolean saveModifiedResources(final IFile[] dirtyFiles) {
		
		Display display= fParentShell.getDisplay();
		if (display == null || display.isDisposed())
			return false;
		
		final boolean[] retVal= new boolean[1];
		Runnable runnable= new Runnable() {
			public void run() {
				try {
					new ProgressMonitorDialog(fParentShell).run(false, false, createSaveModifiedResourcesRunnable(dirtyFiles));
					retVal[0]= true;
				} catch (InvocationTargetException ex) {
					addError(JarPackagerMessages.getString("JarFileExportOperation.errorSavingModifiedResources"), ex); 
					JavaPlugin.log(ex);