NewGC: Merge bleeding edge up to 9009.

test/mjsunit/harmony/block-scoping.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 196 matching lines @@
     let_accessors[i] = function() { return x; }
     var_accessors[i] = function() { return y; }
   }
   for (var j = 0; j < 10; j++) {
     y = j + 10;
     assertEquals(j, let_accessors[j]());
     assertEquals(y, var_accessors[j]());
   }
 }
 f8();