Merge bleeding edge up to 8774 into the GC branch.

test/cctest/test-dictionary.cc

 // 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 65 matching lines @@
     CHECK_EQ(table->Lookup(*key), *value);
   }
 
   // Keys never added to the map should not be found.
   for (int i = 0; i < 1000; i++) {
     Handle<JSObject> o = FACTORY->NewJSArray(100);
     CHECK_EQ(table->FindEntry(*o), ObjectHashTable::kNotFound);
     CHECK_EQ(table->Lookup(*o), HEAP->undefined_value());
   }
 }