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

tests/corelib/list_insert_range_test.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.
 
 main() {
   var list = [];
   list.insertRange(-1, 0);
   Expect.listEquals([], list);
   list.insertRange(0, 0);
   Expect.listEquals([], list);
   list.insertRange(0, 0, 2);
   Expect.listEquals([], list);
-  list.insertRange(0, 0, initialValue: 2);
+  list.insertRange(0, 0, 2);
   Expect.listEquals([], list);
 
   expectIOORE(() { [1, 2].insertRange(-1, 1); });
   expectIOORE(() { [1, 2].insertRange(3, 1); });
   expectIAE(() { [1, 2].insertRange(0, -1); });
 
   list = []; list.insertRange(0, 3);
   Expect.listEquals([null, null, null], list);
 
-  list = []; list.insertRange(0, 3, initialValue: 1);
+  list = []; list.insertRange(0, 3, 1);
   Expect.listEquals([1, 1, 1], list);
 
-  list = [1, 1]; list.insertRange(1, 1, initialValue: 2);
+  list = [1, 1]; list.insertRange(1, 1, 2);
   Expect.listEquals([1, 2, 1], list);
 
-  list = [1, 1]; list.insertRange(2, 2, initialValue: 9);
+  list = [1, 1]; list.insertRange(2, 2, 9);
   Expect.listEquals([1, 1, 9, 9], list);
 
   list = [1, 1]; list.insertRange(2, 1);
   Expect.listEquals([1, 1, null], list);
 
   list = [1, 1]; list.insertRange(0, 3, 3);
   Expect.listEquals([3, 3, 3, 1, 1], list);
 }
 
 void expectIOORE(Function f) {
   Expect.throws(f, (e) => e is IndexOutOfRangeException);
 }
 
 void expectIAE(Function f) {
   Expect.throws(f, (e) => e is ArgumentError);
 }