Get rid of all the library tags.

lib/src/multipart_request.dart

 // Copyright (c) 2013, 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 multipart_request;
-
 import 'dart:async';
 import 'dart:convert';
 import 'dart:math';
 
 import 'base_request.dart';
 import 'byte_stream.dart';
 import 'multipart_file.dart';
 import 'utils.dart';
 
 final _newlineRegExp = new RegExp(r"\r\n|\r|\n");
@@ skipping 150 matching lines @@
   /// Returns a randomly-generated multipart boundary string
   String _boundaryString() {
     var prefix = "dart-http-boundary-";
     var list = new List<int>.generate(_BOUNDARY_LENGTH - prefix.length,
         (index) =>
             _BOUNDARY_CHARACTERS[_random.nextInt(_BOUNDARY_CHARACTERS.length)],
         growable: false);
     return "$prefix${new String.fromCharCodes(list)}";
   }
 }