Clean up package imports and library names

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

-library java.engine;
+// 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.
 
-import 'interner.dart';
-import 'java_core.dart';
+library analyzer.src.generated.java_engine;
+
+import 'package:analyzer/src/generated/interner.dart';
+import 'package:analyzer/src/generated/java_core.dart';
 
 /**
  * A predicate is a one-argument function that returns a boolean value.
  */
 typedef bool Predicate<E>(E argument);
 
 /**
  * Instances of the class `AnalysisException` represent an exception that
  * occurred during the analysis of one or more sources.
  */
@@ skipping 350 matching lines @@
   }
 }
 
 class UUID {
   static int __nextId = 0;
   final String id;
   UUID(this.id);
   String toString() => id;
   static UUID randomUUID() => new UUID((__nextId).toString());
 }