Update intl to new import syntax

pkg/intl/lib/number_format.dart

Index: pkg/intl/lib/number_format.dart
===================================================================
--- pkg/intl/lib/number_format.dart	(revision 14371)
+++ pkg/intl/lib/number_format.dart	(working copy)
@@ -2,13 +2,13 @@
 // 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_format");
+library number_format;
 
-#import('dart:math');
+import 'dart:math';
 
-#import("intl.dart");
-#import("number_symbols.dart");
-#import("number_symbols_data.dart");
+import "intl.dart";
+import "number_symbols.dart";
+import "number_symbols_data.dart";
 
 class NumberFormat {
   /** Variables to determine how number printing behaves. */