Deprecate Math object in corelib in favor of dart:math library.

pkg/intl/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 138 matching lines @@
  * 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_time_patterns.dart');
 #import('date_symbols.dart');
 #import('date_symbol_data.dart');
 
 #source('lib/date_format_field.dart');
 #source('lib/date_format_helpers.dart');
 
 class DateFormat {
 
@@ skipping 420 matching lines @@
   /** Polyfill for missing library function. */
   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;
   }
-}
+}