Fix warnings_checker.dart handling of multitests

tests/language/type_variable_conflict2_test.dart

 // Copyright (c) 2014, 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.
 
 // Regression test for issue 13134. Invocation of a type parameter.
 
 import "package:expect/expect.dart";
 
 class C<T> {
   noSuchMethod(Invocation im) {
     Expect.equals(#T, im.memberName);
     return 42;
   }
 
   // Class 'C' has no instance method 'T': call noSuchMethod.
-  foo() => T(); // /// 01: static type warning
+  foo() => T(); // //# 01: static type warning
 
   // T is in scope, even in static context. Compile-time error to call this.T().
-  static bar() => T(); // /// 02: compile-time error
+  static bar() => T(); // //# 02: compile-time error
 
   // X is not in scope. NoSuchMethodError.
-  static baz() => X(); // /// 03: static type warning
+  static baz() => X(); // //# 03: static type warning
 
   // Class 'C' has no static method 'T': NoSuchMethodError.
-  static qux() => C.T(); // /// 04: static type warning
+  static qux() => C.T(); // //# 04: static type warning
 
   // Class '_Type' has no instance method 'call': NoSuchMethodError.
-  quux() => (T)(); // /// 05: static type warning
+  quux() => (T)(); // //# 05: static type warning
 
   // Runtime type T not accessible from static context. Compile-time error.
-  static corge() => (T)(); // /// 06: compile-time error
+  static corge() => (T)(); // //# 06: compile-time error
 
   // Class '_Type' has no [] operator: NoSuchMethodError.
-  grault() => T[0]; // /// 07: static type warning
+  grault() => T[0]; // //# 07: static type warning
 
   // Runtime type T not accessible from static context. Compile-time error.
-  static garply() => T[0]; // /// 08: compile-time error
+  static garply() => T[0]; // //# 08: compile-time error
 
   // Class '_Type' has no member m: NoSuchMethodError.
-  waldo() => T.m; // /// 09: static type warning
+  waldo() => T.m; // //# 09: static type warning
 
   // Runtime type T not accessible from static context. Compile-time error.
-  static fred() => T.m; // /// 10: compile-time error
+  static fred() => T.m; // //# 10: compile-time error
 }
 
 main() {
-  Expect.equals(42, new C().foo()); // /// 01: continued
-  C.bar(); // /// 02: continued
-  Expect.throws(() => C.baz(), (e) => e is NoSuchMethodError); // /// 03: continued
-  Expect.throws(() => C.qux(), (e) => e is NoSuchMethodError); // /// 04: continued
-  Expect.throws(() => new C().quux(), (e) => e is NoSuchMethodError); // /// 05: continued
-  C.corge(); // /// 06: continued
-  Expect.throws(() => new C().grault(), (e) => e is NoSuchMethodError); // /// 07: continued
-  C.garply(); // /// 08: continued
-  Expect.throws(() => new C().waldo(), (e) => e is NoSuchMethodError); // /// 09: continued
-  C.fred(); // /// 10: continued
+  Expect.equals(42, new C().foo()); // //# 01: continued
+  C.bar(); // //# 02: continued
+  Expect.throws(() => C.baz(), (e) => e is NoSuchMethodError); // //# 03: continued
+  Expect.throws(() => C.qux(), (e) => e is NoSuchMethodError); // //# 04: continued
+  Expect.throws(() => new C().quux(), (e) => e is NoSuchMethodError); // //# 05: continued
+  C.corge(); // //# 06: continued
+  Expect.throws(() => new C().grault(), (e) => e is NoSuchMethodError); // //# 07: continued
+  C.garply(); // //# 08: continued
+  Expect.throws(() => new C().waldo(), (e) => e is NoSuchMethodError); // //# 09: continued
+  C.fred(); // //# 10: continued
 }