Move Bidi functions into methods to make the docs look better

pkg/intl/lib/message_lookup_local.dart

 // Copyright (c) 2012, 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.
 
 /**
  * Message/plural format library with locale support. This can have different
  * implementations based on the mechanism for finding the localized versions
  * of messages. This version expects them to be in a library named e.g.
  * 'messages_en_US'. The prefix is set in the [initializeMessages] call, which
  * must be made for a locale before any lookups can be done.
@@ skipping 23 matching lines @@
  * Calling `msg({'num_people': 2, 'place': 'Athens'});` would
  * produce "I see 2 other people in Athens." as output.
  *
  * See tests/message_format_test.dart for more examples.
  */
  //TODO(efortuna): documentation example involving the offset parameter?
 
 #library('message_lookup_local');
 
 #import('intl.dart');
+#import('src/intl_helpers.dart');
 #import('dart:mirrors');
 
 /**
  * Initialize the user messages for [localeName]. Note that this is an ASYNC
  * operation. This must be called before attempting to use messages in
  * [localeName].
  */
 Future initializeMessages(localeName, [String source = 'messages_']) {
   initializeInternalMessageLookup(
       () => new MessageLookupLocal(localeName, source));
@@ skipping 67 matching lines @@
       MethodMirror localized = messagesForThisLocale.functions[name];
       if (localized == null) return message_str;
       result = messagesForThisLocale.invoke(localized.simpleName, args);
       }
     finally {
       _lookupInProgress = false;
     }
     return result.value.reflectee;
   }
 }