[Isolates] Merge from bleeding_edge to isolates, revisions 6100-6300.

src/zone.cc

Index: src/zone.cc
===================================================================
--- src/zone.cc	(revision 6941)
+++ src/zone.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// 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:
@@ -42,6 +42,7 @@
       scope_nesting_(0),
       segment_head_(NULL) {
 }
+unsigned Zone::allocation_size_ = 0;
 
 
 ZoneScope::~ZoneScope() {