Update all tests

tests/language/mixin_supertype_subclass4_test.dart

 // Copyright (c) 2016, 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.
 // SharedOptions=--supermixin
 
 // Validate the following test from section 12 ("Mixins") of the spec:
 //
 //     "Let M_A be a mixin derived from a class M with direct superclass
 //     S_static.
 //
 //     Let A be an application of M_A.  It is a static warning if the
 //     superclass of A is not a subtype of S_static."
 
 // In this test, M is declared as `class M extends ... with G {}`, so
 // `S_static` is the unnamed mixin application `... with G`.  Since this
 // unnamed mixin application can't be derived from, all the cases should yield
 // a warning.
 
 class B {}
 class C {}
 class D {}
 class E extends B with C implements D {}
 class F extends E {}
 class G {}
 class A = E with M;
 class M
-  extends B with G /// 01: static type warning
-  extends C with G /// 02: static type warning
-  extends D with G /// 03: static type warning
-  extends E with G /// 04: static type warning
-  extends F with G /// 05: static type warning
+  extends B with G //# 01: static type warning
+  extends C with G //# 02: static type warning
+  extends D with G //# 03: static type warning
+  extends E with G //# 04: static type warning
+  extends F with G //# 05: static type warning
   {}
 
 main() {
   new A();
 }