Clean up package imports and library names

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

-library java.io;
+// 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 analyzer.src.generated.java_io;
 
 import "dart:io";
 
+import 'package:analyzer/src/generated/java_core.dart' show JavaIOException;
 import 'package:path/path.dart' as path;
 
-import 'java_core.dart' show JavaIOException;
-
 class JavaFile {
   static path.Context pathContext = path.context;
   static final String separator = Platform.pathSeparator;
   static final int separatorChar = Platform.pathSeparator.codeUnitAt(0);
   String _path;
   JavaFile(String path) {
     _path = path;
   }
   JavaFile.fromUri(Uri uri) : this(pathContext.fromUri(uri));
   JavaFile.relative(JavaFile base, String child) {
@@ skipping 132 matching lines @@
     }
     return null;
   }
 
   static String setProperty(String name, String value) {
     String oldValue = _properties[name];
     _properties[name] = value;
     return oldValue;
   }
 }