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

tests/co19/co19-dart2js.status

 # 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.
 
 
 # Crashes first, please. Then untriaged bugs. There is a section below
 # for co19 bugs.
 [ $compiler == dart2js ]
 Language/03_Overview/1_Scoping_A02_t06: Fail # TODO(ahe): Please triage this failure.
 Language/06_Functions/06_Functions_A01_t22: Fail # TODO(ahe): Please triage this failure.
@@ skipping 215 matching lines @@
 LibTest/core/Expect/equals_A02_t01: Fail, OK
 LibTest/core/List/getRange_A03_t01: Fail, OK
 LibTest/core/List/removeRange_A06_t01: Fail, OK
 LibTest/core/List/setRange_A05_t01: Fail, OK
 LibTest/core/Set/addAll_A01_t04: Fail, OK
 LibTest/core/Set/contains_A01_t03: Fail, OK
 LibTest/core/Set/containsAll_A01_t03: Fail, OK
 LibTest/core/Set/remove_A01_t04: Fail, OK
 LibTest/core/Set/removeAll_A01_t03: Fail, OK
 
+# These tests need to be updated to the new Date core lib API, co19 issue 256:
+LibTest/core/Date/Date.fromMillisecondsSinceEpoch_A01_t01: Fail
+LibTest/core/Date/Date.fromMillisecondsSinceEpoch_A01_t02: Fail
+LibTest/core/Date/Date.fromMillisecondsSinceEpoch_A02_t01: Fail # May be a different issue.
+LibTest/core/Date/Date.fromMillisecondsSinceEpoch_A03_t01: Fail # May be a different issue.
+LibTest/core/Date/Date_A01_t04: Fail
+LibTest/core/Date/Date_A01_t05: Fail
+LibTest/core/Date/isUtc_A01_t01: Fail
+LibTest/core/Date/millisecondsSinceEpoch_A01_t01: Fail
+LibTest/core/Date/operator_GE_A01_t01: Fail
+LibTest/core/Date/operator_GT_A01_t01: Fail
+LibTest/core/Date/operator_LE_A01_t01: Fail
+LibTest/core/Date/operator_LT_A01_t01: Fail
+LibTest/core/Date/operator_equality_A01_t01: Fail
+LibTest/core/Date/timeZoneName_A01_t01: Fail
+LibTest/core/Date/timeZoneOffset_A01_t01: Fail
+LibTest/core/Date/toLocal_A01_t01: Fail
+LibTest/core/Date/toUtc_A01_t01: Fail
+
 [ $compiler == dart2js && $system == macos && $runtime == d8 ]
 LibTest/core/Math/acos_A01_t01: Fail, OK
 LibTest/core/Math/asin_A01_t01: Fail, OK
 LibTest/core/Math/atan_A01_t01: Fail, OK
 
 [ $compiler == dart2js && $system == windows && $runtime == d8 ]
 LibTest/core/double/operator_remainder_A01_t04: Fail
 
 [ $compiler == dart2js ]
 Language/07_Classes/6_Constructors/1_Generative_Constructors_A16_t07: Fail # Redirecting constructors can not use initializing formals. This bug was previously masked - compilation failed, but for different, wrong reason.
@@ skipping 70 matching lines @@
 
 # The following tests use the deprecated Date interface.
 # Issue co19 - 125
 LibTest/core/Date/toString_A02_t01: Fail, OK
 
 LibTest/core/Match/pattern_A01_t01: Fail, OK # co19 issue 212
 LibTest/core/Match/str_A01_t01: Fail, OK # co19 issue 212
 LibTest/core/RegExp/allMatches_A01_t01: Fail, OK # co19 issue 212
 LibTest/core/RegExp/Pattern_semantics/firstMatch_Term_A04_t01: Fail, OK # co19 issue 212
 
-[ $compiler == dart2js && $unchecked ]
-LibTest/core/Date/Date.fromMillisecondsSinceEpoch_A03_t01: Fail
-
 [ $compiler == dart2js && $checked ]
 LibTest/core/Queue/addLast_A01_t01: Slow, Pass
 LibTest/core/Queue/add_A01_t01: Slow, Pass
 LibTest/core/Queue/iterator_hasNext_A01_t01: Slow, Pass
 
 #
 # Issues with co19 test suite.
 #
 # If you add anything here, either file a bug against the Dart
 # language specification, co19 test suite, or add a comment that ahe@
@@ skipping 400 matching lines @@
 Language/14_Types/4_Interface_Types_A10_t01: Fail # http://dartbug.com/5020
 Language/14_Types/4_Interface_Types_A10_t02: Fail # http://dartbug.com/5020
 Language/14_Types/4_Interface_Types_A10_t03: Fail # http://dartbug.com/5020
 Language/14_Types/4_Interface_Types_A10_t04: Fail # http://dartbug.com/5020
 Language/14_Types/4_Interface_Types_A10_t07: Fail # http://dartbug.com/5020
 Language/14_Types/4_Interface_Types_A11_t02: Fail # http://dartbug.com/5020
 Language/14_Types/4_Interface_Types_A12_t09: Fail # http://dartbug.com/5020
 Language/14_Types/4_Interface_Types_A12_t10: Fail # http://dartbug.com/5020
 Language/14_Types/4_Interface_Types_A12_t14: Fail # http://dartbug.com/5020
 Language/14_Types/4_Interface_Types_A12_t16 :Fail # http://dartbug.com/5020