[asm] Fix lots of invalid asm.js tests

test/mjsunit/asm/int32modb.js

 // Copyright 2015 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 stdlib = {};
 var foreign = {};
 var heap = new ArrayBuffer(64 * 1024);
 
 var mod = (function Module(stdlib, foreign, heap) {
   "use asm";
   function mod(dividend, divisor) {
     dividend = dividend|0;
     divisor = divisor|0;
-    return (dividend % divisor) | 0;
+    return ((dividend | 0) % (divisor | 0)) | 0;
   }
   return { mod: mod };
 })(stdlib, foreign, heap).mod;
 
 var divisors = [-2147483648, -32 * 1024, -1000, -16, -7, -2, -1, 0,
                 1, 3, 4, 10, 64, 99, 1023, 1024, 2147483647];
 for (var i = 0; i < divisors.length; i++) {
   var divisor = divisors[i];
   for (var dividend = -2147483648; dividend < 2147483648; dividend += 3999773) {
     assertEquals((dividend % divisor) | 0, mod(dividend, divisor));
   }
 }