Change core lib, dart2js, and more for new optional parameters syntax

lib/compiler/implementation/scanner/keyword.dart

 // Copyright (c) 2011, 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.
 
 /**
  * A keyword in the Dart programming language.
  */
 class Keyword implements SourceString {
   static const List<Keyword> values = const <Keyword> [
       const Keyword("break"),
@@ skipping 61 matching lines @@
 
   static Map<String, Keyword> _keywords;
   static Map<String, Keyword> get keywords {
     if (_keywords === null) {
       _keywords = computeKeywordMap();
     }
     return _keywords;
   }
 
   const Keyword(String this.syntax,
-                [bool this.isPseudo = false,
-                 bool this.isBuiltIn = false,
-                 PrecedenceInfo this.info = KEYWORD_INFO]);
+                {bool this.isPseudo: false,
+                 bool this.isBuiltIn: false,
+                 PrecedenceInfo this.info: KEYWORD_INFO});
 
   static Map<String, Keyword> computeKeywordMap() {
     Map<String, Keyword> result = new LinkedHashMap<String, Keyword>();
     for (Keyword keyword in values) {
       result[keyword.syntax] = keyword;
     }
     return result;
   }
 
   int hashCode() => syntax.hashCode();
@@ skipping 124 matching lines @@
   final Keyword keyword;
 
   LeafKeywordState(String syntax) : keyword = Keyword.keywords[syntax];
 
   bool isLeaf() => true;
 
   KeywordState next(int c) => null;
 
   String toString() => keyword.syntax;
 }