Fix warnings_checker.dart handling of multitests

tests/language_strong/call_nonexistent_static_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";
 
 // When attempting to call a nonexistent static method, getter or setter, check
 // that a NoSuchMethodError is thrown.
 
 class C {}
 
 class D {
-  get hest => 1; // /// 04: continued
-  set hest(val) {} // /// 05: continued
+  get hest => 1; // //# 04: continued
+  set hest(val) {} // //# 05: continued
 }
 
-get fisk => 2; /// 09: continued
-set fisk(val) {} /// 10: continued
+get fisk => 2; //# 09: continued
+set fisk(val) {} //# 10: continued
 
 expectNsme([void fun()]) {
   if (fun != null) {
     Expect.throws(fun, (e) => e is NoSuchMethodError);
   }
 }
 
 alwaysThrows() {
   throw new NoSuchMethodError(null, const Symbol('foo'), [], {});
 }
 
 test01() {
-  C.hest = 1; // /// 01: static type warning
+  C.hest = 1; // //# 01: static type warning
 }
 
 test02() {
-  C.hest; // /// 02: static type warning
+  C.hest; // //# 02: static type warning
 }
 
 test03() {
-  C.hest(); // /// 03: static type warning
+  C.hest(); // //# 03: static type warning
 }
 
 test04() {
-  D.hest = 1; // /// 04: static type warning
+  D.hest = 1; // //# 04: static type warning
 }
 
 test05() {
-  D.hest; // /// 05: static type warning
+  D.hest; // //# 05: static type warning
 }
 
 test06() {
-  fisk = 1; // /// 06: static type warning
+  fisk = 1; // //# 06: static type warning
 }
 
 test07() {
-  fisk; // /// 07: static type warning
+  fisk; // //# 07: static type warning
 }
 
 test08() {
-  fisk(); // /// 08: static type warning
+  fisk(); // //# 08: static type warning
 }
 
 test09() {
-  fisk = 1; // /// 09: static type warning
+  fisk = 1; // //# 09: static type warning
 }
 
 test10() {
-  fisk; // /// 10: static type warning
+  fisk; // //# 10: static type warning
 }
 
 main() {
   expectNsme(alwaysThrows);
   expectNsme(
-    test01 // /// 01: continued
+    test01 // //# 01: continued
   );
   expectNsme(
-    test02 // /// 02: continued
+    test02 // //# 02: continued
   );
   expectNsme(
-    test03 // /// 03: continued
+    test03 // //# 03: continued
   );
   expectNsme(
-    test04 // /// 04: continued
+    test04 // //# 04: continued
   );
   expectNsme(
-    test05 // /// 05: continued
+    test05 // //# 05: continued
   );
   expectNsme(
-    test06 // /// 06: continued
+    test06 // //# 06: continued
   );
   expectNsme(
-    test07 // /// 07: continued
+    test07 // //# 07: continued
   );
   expectNsme(
-    test08 // /// 08: continued
+    test08 // //# 08: continued
   );
   expectNsme(
-    test09 // /// 09: continued
+    test09 // //# 09: continued
   );
   expectNsme(
-    test10 // /// 10: continued
+    test10 // //# 10: continued
   );
 }