deps: upgrade V8 to 4.7.80.24

Pick up the latest branch head for V8 4.7:
https://github.com/v8/v8/commit/be169f8df059040e6a53ec1dd4579d8bca2167b5

Full change history for the 4.7 branch:
https://chromium.googlesource.com/v8/v8.git/+log/branch-heads/4.7

V8 blog post about what is new on V8 4.7:
http://v8project.blogspot.de/2015/10/v8-release-47.html

PR-URL: https://github.com/nodejs/node/pull/4106
Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: targos - Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: rvagg - Rod Vagg <rod@vagg.org>

1 files changed, 11 insertions, 2 deletions

diff --git a/deps/v8/src/globals.h b/deps/v8/src/globals.h
index 5f1070382c..9d4bafb6ff 100644
--- a/deps/v8/src/globals.h
+++ b/deps/v8/src/globals.h
@@ -431,13 +431,14 @@ class MarkCompactCollector;
 class NewSpace;
 class Object;
 class OldSpace;
+class ParameterCount;
 class Foreign;
 class Scope;
 class ScopeInfo;
 class Script;
 class Smi;
 template <typename Config, class Allocator = FreeStoreAllocationPolicy>
-    class SplayTree;
+class SplayTree;
 class String;
 class Symbol;
 class Name;
@@ -600,6 +601,10 @@ enum CallConstructorFlags {
   NO_CALL_CONSTRUCTOR_FLAGS = 0,
   // The call target is cached in the instruction stream.
   RECORD_CONSTRUCTOR_TARGET = 1,
+  // TODO(bmeurer): Kill these SUPER_* modes and use the Construct builtin
+  // directly instead; also there's no point in collecting any "targets" for
+  // super constructor calls, since these are known when we optimize the
+  // constructor that contains the super call.
   SUPER_CONSTRUCTOR_CALL = 1 << 1,
   SUPER_CALL_RECORD_TARGET = SUPER_CONSTRUCTOR_CALL | RECORD_CONSTRUCTOR_TARGET
 };
@@ -769,6 +774,10 @@ const uint64_t kHoleNanInt64 =
     (static_cast<uint64_t>(kHoleNanUpper32) << 32) | kHoleNanLower32;
 
 
+// ES6 section 20.1.2.6 Number.MAX_SAFE_INTEGER
+const double kMaxSafeInteger = 9007199254740991.0;  // 2^53-1
+
+
 // The order of this enum has to be kept in sync with the predicates below.
 enum VariableMode {
   // User declared variables:
@@ -992,7 +1001,7 @@ inline bool IsSubclassConstructor(FunctionKind kind) {
 }
 
 
-inline bool IsConstructor(FunctionKind kind) {
+inline bool IsClassConstructor(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
   return kind &
          (FunctionKind::kBaseConstructor | FunctionKind::kSubclassConstructor |