Update intl to new import syntax

pkg/intl/lib/bidi_utils.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;
+
 /**
  * Bidi stands for Bi-directional text.
  * According to http://en.wikipedia.org/wiki/Bi-directional_text:
  * Bi-directional text is text containing text in both text directionalities,
  * both right-to-left (RTL) and left-to-right (LTR). It generally involves text
  * containing different types of alphabets, but may also refer to boustrophedon,
  * which is changing text directionality in each row.
  *
  * This file provides some utility classes for determining directionality of
  * text, switching CSS layout from LTR to RTL, and other normalizing utilities
@@ skipping 335 matching lines @@
 
   /**
    * Find the first index in [str] of the first closing parenthesis that does
    * not match an opening parenthesis.
    */
   static int _unmatchedParenIndex(String str) {
     int sum = 0;
     int index = 0;
     while (sum >= 0 || index > str.length) {
       int char = str.charCodeAt(index);
-      if (char == '('.charCodeAt(0)) sum++;
+      if (char == '('.charCodeAt(0))  sum++;
       else if (char == ')'.charCodeAt(0)) sum--;
       index++;
     }
     return index;
   }
 
   /**
    * Replace the double and single quote directly after a Hebrew character in
    * [str] with GERESH and GERSHAYIM. This is most likely the user's intention.
    */
@@ skipping 20 matching lines @@
 
   /**
    * Check the estimated directionality of [str], return true if the piece of
    * text should be laid out in RTL direction. If [isHtml] is true, the string
    * is HTML or HTML-escaped.
    */
   static bool detectRtlDirectionality(String str, {bool isHtml: false}) {
     return estimateDirectionOfText(str, isHtml: isHtml) == TextDirection.RTL;
   }
 }