Get rid of all the library tags.

lib/src/parser.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 args.src.parser;
-
 import 'arg_parser.dart';
 import 'arg_results.dart';
 import 'option.dart';
 
 final _SOLO_OPT = new RegExp(r'^-([a-zA-Z0-9])$');
 final _ABBR_OPT = new RegExp(r'^-([a-zA-Z0-9]+)(.*)$');
 final _LONG_OPT = new RegExp(r'^--([a-zA-Z\-_0-9]+)(=(.*))?$');
 
 /// The actual argument parsing class.
 ///
@@ skipping 263 matching lines @@
   }
 
   /// Validates that [value] is allowed as a value of [option].
   void _validateAllowed(Option option, String value) {
     if (option.allowed == null) return;
 
     validate(option.allowed.contains(value),
         '"$value" is not an allowed value for option "${option.name}".');
   }
 }