lingering step 2 of the test rename overhaul: make await tests also a directory

frog/tests/await/and_normalization_negative_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.
 
+// The next line is used to tell test.dart that this test is run by invoking
+// awaitc.dart and passing this file as an argument (e.g. frog
+// frog/await/awaitc.dart test.dart):
+// VMOptions=frog/await/awaitc.dart
+
 // await on boolean || expressions.
 #import("await_test_helper.dart");
 
 main() {
   // boolean value is correct:
   Expect.equals(false, await futureOf(true) && await futureOf(false));
   Expect.equals(false, await futureOf(false) && await futureOf(false));
   Expect.equals(false, await futureOf(false) && await futureOf(true));
   Expect.equals(true, await futureOf(true) && await futureOf(true));
 
   // short-circuit works, second example is important because it shows that not
   // only the error doesn't occur, but that the expression is not evaluated
   // altogether.
   Expect.equals(false, await futureOf(false) && await errorOf("ERROR1"));
   Expect.equals(false, await futureOf(false) && await () { throw "ERROR2"; }());
   Expect.fail("fail to ensure that this line is reached");
 }