deps: backport 75e43a6 from v8 upstream (again)

Note: When this was cherry-picked for v8 v4.4 (landed in nodejs#2636),
test-heap.cc:1989 chunk did not exist. It now exists in
v8 v4.5.101.30. This PR completes the cherry pick of the whole commit
from v8.

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@{nodejs#30103}

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

@@ -1855,7 +1855,7 @@ TEST(TestAlignmentCalculations) {
       Heap::GetMaximumFillToAlign(kSimd128Unaligned);
   CHECK_EQ(maximum_simd128_misalignment, max_simd128_unaligned_fill);
 
-  Address base = reinterpret_cast<Address>(NULL);
+  Address base = static_cast<Address>(NULL);
   int fill = 0;
 
   // Word alignment never requires fill.