Make the date formatting library visible in apidoc by merging it into Intl

pkg/intl/example/basic/basic_example.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.
 
 /**
  * This provides a basic example of internationalization usage. It uses the
  * local variant of all the facilities, meaning that libraries with the
  * data for all the locales are directly imported by the program. More realistic
  * examples might read the data from files or over the web, which uses the
  * same APIs but requires different imports.
  *
  * This defines messages for an English locale directly in the program and
  * has separate libraries that define German and Thai messages that say more or
  * less the same thing, and prints the message with the date and time in it
  * formatted appropriately for the locale.
  */
 
 #library('intl_basic_example');
 // These can be replaced with package:intl/... references if using this in
 // a separate package.
 // TODO(alanknight): Replace these with package: once pub works in buildbots.
-#import('../../lib/date_format.dart');
 #import('../../lib/date_symbol_data_local.dart');
 #import('../../lib/intl.dart');
 #import('../../lib/message_lookup_local.dart');
 #import('messages_all.dart');
 
 Function doThisWithTheOutput;
 
 void setup(Function program, Function output) {
   // Before we use any messages or use date formatting for a locale we must
   // call their initializtion messages, which are asynchronous, since they
@@ skipping 26 matching lines @@
   printForLocale(aDate, th, runAt);
 }
 
 printForLocale(aDate, intl, operation) {
   var hmsFormat = intl.date().add_Hms();
   var dayFormat = intl.date().add_yMMMMEEEEd();
   var time = hmsFormat.format(aDate);
   var day = dayFormat.format(aDate);
   Intl.withLocale(intl.locale, () { doThisWithTheOutput(operation(time,day));});
 }