Reorganize some pub libraries.

sdk/lib/_internal/pub/lib/src/command/version.dart

Index: sdk/lib/_internal/pub/lib/src/command/version.dart
diff --git a/sdk/lib/_internal/pub/lib/src/command_version.dart b/sdk/lib/_internal/pub/lib/src/command/version.dart
similarity index 75%
rename from sdk/lib/_internal/pub/lib/src/command_version.dart
rename to sdk/lib/_internal/pub/lib/src/command/version.dart
index 457eebd3f83a1ae79fd868f8d2168bf27909f3e8..5fa6026835b5333614f2f7e8841581467cc45f93 100644
--- a/sdk/lib/_internal/pub/lib/src/command_version.dart
+++ b/sdk/lib/_internal/pub/lib/src/command/version.dart
@@ -2,15 +2,15 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library command_version;
+library pub.command.version;
 
 import 'dart:async';
 
-import 'command.dart';
-import 'log.dart' as log;
-import 'sdk.dart' as sdk;
+import '../command.dart';
+import '../log.dart' as log;
+import '../sdk.dart' as sdk;
 
-/// Handles the `version` pub command. 
+/// Handles the `version` pub command.
 class VersionCommand extends PubCommand {
   String get description => 'Print pub version.';
   String get usage => 'pub version';