Clean up package imports and library names

pkg/analyzer/lib/src/generated/interner.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 interner;
+library analyzer.src.generated.interner;
 
 import 'dart:collection';
 
 /**
  * The interface `Interner` defines the behavior of objects that can intern
  * strings.
  */
 abstract class Interner {
   /**
    * Return a string that is identical to all of the other strings that have
@@ skipping 24 matching lines @@
 }
 
 /**
  * The class `NullInterner` implements an interner that does nothing (does not
  * actually intern any strings).
  */
 class NullInterner implements Interner {
   @override
   String intern(String string) => string;
 }