Update Intl's json data file generation to current APIs

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.
 
 part of intl;
 
 // TODO(efortuna): Customized pattern system -- suggested by i18n needs
 // feedback on appropriateness.
 /**
  * DateFormat is for formatting and parsing dates in a locale-sensitive
@@ skipping 540 matching lines @@
   }
 
   static List get _fieldConstructors => [
       (pattern, parent) => new _DateFormatQuotedField(pattern, parent),
       (pattern, parent) => new _DateFormatPatternField(pattern, parent),
       (pattern, parent) => new _DateFormatLiteralField(pattern, parent)];
 
   /** Parse the template pattern and return a list of field objects.*/
   List parsePattern(String pattern) {
     if (pattern == null) return null;
-    return _reverse(_parsePatternHelper(pattern));
+    return _parsePatternHelper(pattern).reversed.toList();
   }
 
   /** Recursive helper for parsing the template pattern. */
   List _parsePatternHelper(String pattern) {
     if (pattern.isEmpty) return [];
 
     var matched = _match(pattern);
     if (matched == null) return [];
 
     var parsed = _parsePatternHelper(
                       pattern.substring(matched.fullPattern().length));
     parsed.add(matched);
     return parsed;
   }
 
   /** Find elements in a string that are patterns for specific fields.*/
   _DateFormatField _match(String pattern) {
     for (var i = 0; i < _matchers.length; i++) {
       var regex = _matchers[i];
       var match = regex.firstMatch(pattern);
       if (match != null) {
         return _fieldConstructors[i](match.group(0), this);
       }
     }
   }
-
-  /** Polyfill for missing library function. */
-  List _reverse(List list) {

[Emily Fortuna, 2013/03/18 22:45:15]

yay!

-    // 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;
-  }
 }