[asm] Fix lots of invalid asm.js tests

test/mjsunit/asm/infinite-loops-taken.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var error = "error";
 function counter(x) {
   return (function() { if (x-- == 0) throw error;});
 }
 
+// TODO(asm): This module is not valid asm.js.
 function Module() {
   "use asm";
 
   function w0(f) {
     while (1) f();
     return 108;
   }
 
   function w1(f) {
     if (1) while (1) f();
@@ skipping 12 matching lines @@
   }
 
   return { w0: w0, w1: w1, w2: w2, w3: w3 };
 }
 
 var m = Module();
 assertThrowsEquals(function() { m.w0(counter(5)) }, error);
 assertThrowsEquals(function() { m.w1(counter(5)) }, error);
 assertThrowsEquals(function() { m.w2(counter(5)) }, error);
 assertEquals(111, m.w3(counter(5)));