Add missing v8:: namespace prefix

src/node.h

@@ -38,7 +38,7 @@ int Start (int argc, char *argv[]);
 do {                                                                      \
   v8::Local<v8::Signature> __callback##_SIG = v8::Signature::New(templ);  \
   v8::Local<v8::FunctionTemplate> __callback##_TEM =                      \
-    FunctionTemplate::New(callback, v8::Handle<v8::Value>(),              \
+    v8::FunctionTemplate::New(callback, v8::Handle<v8::Value>(),          \
                           __callback##_SIG);                              \
   templ->PrototypeTemplate()->Set(v8::String::NewSymbol(name),            \
                                   __callback##_TEM);                      \