Fix compile errors on 64 bit platforms.

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
===================================================================
--- test/cctest/test-api.cc	(revision 11259)
+++ test/cctest/test-api.cc	(working copy)
@@ -10869,9 +10869,9 @@
   v8::HandleScope outer;
   v8::Persistent<Context> env(Context::New());
   CHECK(!env.IsEmpty());
-  const int kSize = 1024*1024;
+  const intptr_t kSize = 1024*1024;
   CHECK_EQ(v8::V8::AdjustAmountOfExternalAllocatedMemory(kSize), kSize);
-  CHECK_EQ(v8::V8::AdjustAmountOfExternalAllocatedMemory(-kSize), 0);
+  CHECK_EQ(v8::V8::AdjustAmountOfExternalAllocatedMemory(-kSize), 0l);
 }