Migrating block 50, first commit, after tool has run

tests/language/compile_time_constant_d_test.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.
-
-import "package:expect/expect.dart";
-
-class A {
-  final x;
-  final y;
-  final z;
-  final t;
-
-  const A(this.z, tt)
-      : y = 499,
-        t = tt,
-        x = 3;
-  const A.named(z, this.t)
-      : y = 400 + z,
-        this.z = z,
-        x = 3;
-  const A.named2(t, z, y, x)
-      : x = t,
-        y = z,
-        z = y,
-        t = x;
-
-  toString() => "A $x $y $z $t";
-}
-
-const a1 = const A(99, 100);
-const a2 = const A.named(99, 100);
-const a3 = const A.named2(1, 2, 3, 4);
-
-main() {
-  Expect.equals(3, a1.x);
-  Expect.equals(499, a1.y);
-  Expect.equals(99, a1.z);
-  Expect.equals(100, a1.t);
-  Expect.equals("A 3 499 99 100", a1.toString());
-
-  Expect.isTrue(identical(a1, a2));
-
-  Expect.equals(1, a3.x);
-  Expect.equals(2, a3.y);
-  Expect.equals(3, a3.z);
-  Expect.equals(4, a3.t);
-  Expect.equals("A 1 2 3 4", a3.toString());
-}