added --stress-opt option to d8

src/d8.h

Index: src/d8.h
diff --git a/src/d8.h b/src/d8.h
index 540c9cac509c2349e45a35c8c7155dd61249ee15..e62ce3803642a17e9fcc339acbd0bb77dc52e2e4 100644
--- a/src/d8.h
+++ b/src/d8.h
@@ -120,7 +120,6 @@ class Shell: public i::AllStatic {
                             bool report_exceptions);
   static const char* ToCString(const v8::String::Utf8Value& value);
   static void ReportException(TryCatch* try_catch);
-  static void Initialize();
   static void OnExit();
   static int* LookupCounter(const char* name);
   static void* CreateHistogram(const char* name,
@@ -130,8 +129,14 @@ class Shell: public i::AllStatic {
   static void AddHistogramSample(void* histogram, int sample);
   static void MapCounters(const char* name);
   static Handle<String> ReadFile(const char* name);
+  static void Initialize();
+  static void RenewEvaluationContext();
+  static void InstallUtilityScript();
   static void RunShell();
+  static int RunScript(char* filename);
+  static int RunMain(int argc, char* argv[]);
   static int Main(int argc, char* argv[]);
+  static Handle<ObjectTemplate> CreateGlobalTemplate();
   static Handle<Array> GetCompletions(Handle<String> text,
                                       Handle<String> full);
 #ifdef ENABLE_DEBUGGER_SUPPORT