Merge experimental/gc branch to the bleeding_edge.

src/liveobjectlist.cc

Index: src/liveobjectlist.cc
===================================================================
--- src/liveobjectlist.cc	(revision 9327)
+++ src/liveobjectlist.cc	(working copy)
@@ -2613,7 +2613,7 @@
     HeapObject* heap_obj = it.Obj();
     if (heap->InFromSpace(heap_obj)) {
       OS::Print(" ERROR: VerifyNotInFromSpace: [%d] obj %p in From space %p\n",
-                i++, heap_obj, heap->new_space()->FromSpaceLow());
+                i++, heap_obj, Heap::new_space()->FromSpaceStart());
     }
   }
 }