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

pkg/intl/lib/date_format.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.
 
 /**
  * DateFormat is for formatting and parsing dates in a locale-sensitive
  * manner.
  * It allows the user to choose from a set of standard date time formats as well
  * as specify a customized pattern under certain locales. Date elements that
  * vary across locales include month name, week name, field order, etc.
@@ skipping 137 matching lines @@
  * strings consisting of exactly two digits, as defined by {@link
  * java.lang.Character#isDigit(char)}, will be parsed into the default
  * century. Any other numeric string, such as a one digit string, a three or
  * more digit string will be interpreted as its face value.
  *
  * If the year pattern does not have exactly two 'y' characters, the year is
  * interpreted literally, regardless of the number of digits. So using the
  * pattern "MM/dd/yyyy", "01/11/12" parses to Jan 11, 12 A.D.
  */
 
-#library('date_format');
-
-#import('dart:math');
-#import('intl.dart');
-#import('date_symbols.dart');
-#import('src/intl_helpers.dart');
-#import('src/date_format_internal.dart');
-
-#source('src/date_format_field.dart');
-#source('src/date_format_helpers.dart');
-
 class DateFormat {
 
   /**
    * Creates a new DateFormat, using the format specified by [newPattern]. For
    * forms that match one of our predefined skeletons, we look up the
    * corresponding pattern in [locale] (or in the default locale if none is
    * specified) and use the resulting full format string. This is the
    * preferred usage, but if [newPattern] does not match one of the skeletons,
    * then it is used as a format directly, but will not be adapted to suit
    * the locale.
@@ skipping 383 matching lines @@
   List _reverse(List list) {
     // TODO(alanknight): Use standardized list reverse when implemented.
     // See Issue 2804.
     var result = new List();
     for (var i = list.length-1; i >= 0; i--) {
       result.addLast(list[i]);
     }
     return result;
   }
 }