Bug 310494 [LinkedResources] Preference "Link and create virtual folders" does not work
I20100425-2000 The 2 options on the Linked Resourced with name "Link and create virtual folders" don't work. When they are selected, dropping items does nothing. In CopyFilesAndFoldersOperation#copyOrLinkFiles(..), the test "hasFlag(dropOperation, ImportTypeDialog.IMPORT_VIRTUAL_FOLDERS_AND_LINKS)" always fails because dropOperation is always COPY.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/actions/CopyFilesAndFoldersOperation.java
*/
	private void copyFileStores(IContainer destination,
			final IFileStore[] stores, boolean fork, IProgressMonitor monitor) {
		
		
		
		IStatus fileStatus = checkExist(stores);
		if (fileStatus.getSeverity() != IStatus.OK) {
			displayError(fileStatus);
			return;
		}
		String errorMsg = validateImportDestinationInternal(destination, stores);
		if (errorMsg != null) {
			displayError(errorMsg);
			return;
		}
		final IPath destinationPath = destination.getFullPath();
		if (fork) {
			WorkspaceModifyOperation op = new WorkspaceModifyOperation() {
				public void execute(IProgressMonitor monitor) {
					copyFileStores(stores, destinationPath, monitor);
				}
			};
			try {
				PlatformUI.getWorkbench().getProgressService().run(true, true,
						op);
			} catch (InterruptedException e) {
				return;
			} catch (InvocationTargetException exception) {
				display(exception);