Clean up package imports and library names

pkg/analyzer/lib/src/generated/sdk.dart

 // Copyright (c) 2014, the Dart 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 file.
 
-library engine.sdk;
+library analyzer.src.generated.sdk;
 
 import 'dart:collection';
 
-import 'ast.dart';
-import 'engine.dart' show AnalysisContext;
-import 'source.dart' show ContentCache, Source, UriKind;
+import 'package:analyzer/src/generated/ast.dart';
+import 'package:analyzer/src/generated/engine.dart' show AnalysisContext;
+import 'package:analyzer/src/generated/source.dart'
+    show ContentCache, Source, UriKind;
 
 /**
  * A Dart SDK installed in a specified location.
  */
 abstract class DartSdk {
   /**
    * The short name of the dart SDK 'async' library.
    */
   static final String DART_ASYNC = "dart:async";
 
@@ skipping 368 matching lines @@
     _platforms |= DART2JS_PLATFORM;
   }
 
   /**
    * Record that this library can be run on the VM.
    */
   void setVmLibrary() {
     _platforms |= VM_PLATFORM;
   }
 }