Rename fletch -> dartino

pkg/fletchc/lib/src/verbs/x_upgrade_verb.dart

-// Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE.md file.
-
-library fletchc.verbs.x_upgrade_verb;
-
-import 'infrastructure.dart';
-import '../worker/developer.dart' show upgradeAgent;
-import 'documentation.dart' show upgradeDocumentation;
-
-const Action upgradeAction = const Action(
-    upgradeFunction,
-    upgradeDocumentation,
-    requiresSession: true,
-    supportsWithUri: true,
-    requiredTarget: TargetKind.AGENT);
-
-Future upgradeFunction(AnalyzedSentence sentence, VerbContext context) async {
-  return context.performTaskInWorker(
-      new UpgradeTask(sentence.base, sentence.withUri));
-}
-
-class UpgradeTask extends SharedTask {
-  final Uri base;
-  final Uri package;
-
-  UpgradeTask(this.base, this.package);
-
-  Future call(
-      CommandSender commandSender,
-      StreamIterator<ClientCommand> commandIterator) async {
-        return await upgradeAgent(commandSender, commandIterator,
-            SessionState.current, base, package);
-  }
-}