Get rid of distinction between below- and above-watermark in page allocation....

src/mksnapshot.cc

Index: src/mksnapshot.cc
===================================================================
--- src/mksnapshot.cc	(revision 7216)
+++ src/mksnapshot.cc	(working copy)
@@ -228,7 +228,7 @@
   }
   // If we don't do this then we end up with a stray root pointing at the
   // context even after we have disposed of the context.
-  i::Heap::CollectAllGarbage(true);
+  i::Heap::CollectAllGarbage(i::Heap::kNoGCFlags);
   i::Object* raw_context = *(v8::Utils::OpenHandle(*context));
   context.Dispose();
   CppByteSink sink(argv[1]);