deps: backport 75e43a6 from v8 upstream

deps: backport 75e43a6 from v8 upstream

Note: chunk in test-heap.cc:1989 discarded as related code missing
from current version in node.

Original commit message:

  Use static_cast<> for NULL (clang 3.7)

  The following errors come up when compiling v8
   with clang 3.7 on FreeBSD/amd64:

  src/runtime/runtime-i18n.cc:629:37: error: reinterpret_cast from
  'nullptr_t' to 'v8::internal::Smi *' is not allowed
    local_object->SetInternalField(1, reinterpret_cast<Smi*>(NULL));
                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

  test/cctest/test-heap.cc:131:20: error: reinterpret_cast from
        'nullptr_t' to 'v8::internal::Object *' is not allowed
    Handle<Object> n(reinterpret_cast<Object*>(NULL), isolate);
                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  test/cctest/test-heap.cc:1989:18: error: reinterpret_cast from
        'nullptr_t' to 'Address' (aka 'unsigned char *') is not
        allowed
    Address base = reinterpret_cast<Address>(NULL);
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  +add myself to the AUTHORS file.

  BUG=

  Review URL: https://codereview.chromium.org/1277353002

  Cr-Commit-Position: refs/heads/master@{#30103}

PR-URL: https://github.com/nodejs/node/pull/2636
Reviewed-By: thefourtheye - Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>