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}

deps/v8/AUTHORS

@@ -69,6 +69,7 @@ Kang-Hao (Kenny) Lu <kennyluck@csail.mit.edu>
 Luis Reis <luis.m.reis@gmail.com>
 Luke Zarko <lukezarko@gmail.com>
 Maciej Małecki <me@mmalecki.com>
+Marcin Cieślak <saper@marcincieslak.com>
 Mathias Bynens <mathias@qiwi.be>
 Matt Hanselman <mjhanselman@gmail.com>
 Matthew Sporleder <msporleder@gmail.com>

deps/v8/src/runtime/runtime-i18n.cc

@@ -627,7 +627,7 @@ RUNTIME_FUNCTION(Runtime_CreateBreakIterator) {
 
   local_object->SetInternalField(0, reinterpret_cast<Smi*>(break_iterator));
   // Make sure that the pointer to adopted text is NULL.
-  local_object->SetInternalField(1, reinterpret_cast<Smi*>(NULL));
+  local_object->SetInternalField(1, static_cast<Smi*>(nullptr));
 
   Factory* factory = isolate->factory();
   Handle<String> key = factory->NewStringFromStaticChars("breakIterator");

deps/v8/test/cctest/test-heap.cc

@@ -126,7 +126,7 @@ TEST(HandleNull) {
   Isolate* isolate = CcTest::i_isolate();
   HandleScope outer_scope(isolate);
   LocalContext context;
-  Handle<Object> n(reinterpret_cast<Object*>(NULL), isolate);
+  Handle<Object> n(static_cast<Object*>(nullptr), isolate);
   CHECK(!n.is_null());
 }