Migrate first block of tests in standalone to standalone_2

tests/standalone_2/double_temp_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.
 // Test correct usage of inlined double temporary objects.
 
 import "package:expect/expect.dart";
 
 main() {
   for (int i = 0; i < 2000; i++) {
     testBinaryOp();
@@ skipping 16 matching lines @@
 // VM: temporary double should be used only for "-b", otherwise the
 // function would always return the same object.
 double unary(double a, double b) {
   return -(a * (-b));
 }
 
 testUnaryOp() {
   var x = unary(1.0, 2.0);
   var y = unary(3.0, 4.0);
   Expect.equals(2.0, x);
+  Expect.equals(12.0, y);
 }