Merge up to 8597 to experimental/gc from the bleeding edge.

test/mjsunit/regress/regress-1365.js

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 62 matching lines @@
 function CheckPotentiallyShadowedByEval() {
   var exception = false;
   try {
     eval("hasOwnProperty('x')");
   } catch(e) {
     exception = true;
   }
   assertTrue(exception);
 }
 CheckPotentiallyShadowedByEval();