Change intl to use new pub layout

pkg/intl/number_symbols.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.
-#library("number_symbols");
-
-/**
- * This holds onto information about how a particular locale formats numbers. It
- * contains strings for things like the decimal separator, digit to use for "0"
- * and infinity. We expect the data for instances to be generated out of ICU
- * or a similar reference source.
- */
-
-class NumberSymbols {
-  final String NAME;
-  final String DECIMAL_SEP, GROUP_SEP, PERCENT, ZERO_DIGIT, PLUS_SIGN,
-      MINUS_SIGN, EXP_SYMBOL, PERMILL, INFINITY, NAN, DECIMAL_PATTERN,
-      SCIENTIFIC_PATTERN, PERCENT_PATTERN, CURRENCY_PATTERN, DEF_CURRENCY_CODE;
-
-  const NumberSymbols([this.NAME,
-                       this.DECIMAL_SEP,
-                       this.GROUP_SEP,
-                       this.PERCENT,
-                       this.ZERO_DIGIT,
-                       this.PLUS_SIGN,
-                       this.MINUS_SIGN,
-                       this.EXP_SYMBOL,
-                       this.PERMILL,
-                       this.INFINITY,
-                       this.NAN,
-                       this.DECIMAL_PATTERN,
-                       this.SCIENTIFIC_PATTERN,
-                       this.PERCENT_PATTERN,
-                       this.CURRENCY_PATTERN,
-                       this.DEF_CURRENCY_CODE]);
-
-  toString() => NAME;
-}