deps: update v8 to 4.4.63.9

Upgrade the bundled V8 and update code in src/ and lib/ to the new API.

Notable backwards incompatible changes are the removal of the smalloc
module and dropped support for CESU-8 decoding.  CESU-8 support can be
brought back if necessary by doing UTF-8 decoding ourselves.

This commit includes https://codereview.chromium.org/1192973004 to fix
a build error on python 2.6 systems.  The original commit log follows:

    Use optparse in js2c.py for python compatibility

    Without this change, V8 won't build on RHEL/CentOS 6 because the
    distro python is too old to know about the argparse module.

PR-URL: https://github.com/nodejs/io.js/pull/2022
Reviewed-By: Rod Vagg <rod@vagg.org>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>

1 files changed, 3 insertions, 5 deletions

diff --git a/lib/v8.js b/lib/v8.js
index b0b2860a57..f25814bab3 100644
--- a/lib/v8.js
+++ b/lib/v8.js
@@ -15,11 +15,9 @@
 'use strict';
 
 const v8binding = process.binding('v8');
-const smalloc = require('internal/smalloc');
 
 const heapStatisticsBuffer =
-    smalloc.alloc(v8binding.kHeapStatisticsBufferLength,
-                  v8binding.kHeapStatisticsBufferType);
+    new Uint32Array(v8binding.heapStatisticsArrayBuffer);
 
 const kTotalHeapSizeIndex = v8binding.kTotalHeapSizeIndex;
 const kTotalHeapSizeExecutableIndex = v8binding.kTotalHeapSizeExecutableIndex;
@@ -28,9 +26,9 @@ const kUsedHeapSizeIndex = v8binding.kUsedHeapSizeIndex;
 const kHeapSizeLimitIndex = v8binding.kHeapSizeLimitIndex;
 
 exports.getHeapStatistics = function() {
-  var buffer = heapStatisticsBuffer;
+  const buffer = heapStatisticsBuffer;
 
-  v8binding.getHeapStatistics(buffer);
+  v8binding.updateHeapStatisticsArrayBuffer();
 
   return {
     'total_heap_size': buffer[kTotalHeapSizeIndex],