removed some unnecessary stuff from d8's initialization

src/d8.h

Index: src/d8.h
diff --git a/src/d8.h b/src/d8.h
index e62ce3803642a17e9fcc339acbd0bb77dc52e2e4..c246ae264e33dee9bc278374cb9f66187453c144 100644
--- a/src/d8.h
+++ b/src/d8.h
@@ -129,7 +129,7 @@ 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 Initialize(bool shell);

[Yang, 2011/06/21 02:25:55]

Adding argument specifying whether to expect interactive shell or not. The
decides whether to prepare utility context.

   static void RenewEvaluationContext();
   static void InstallUtilityScript();
   static void RunShell();
@@ -202,7 +202,7 @@ class Shell: public i::AllStatic {
 
   static void AddOSMethods(Handle<ObjectTemplate> os_template);
 
-  static Handle<Context> utility_context() { return utility_context_; }
+  static Handle<Context> evaluation_context() { return evaluation_context_; }
 
   static const char* kHistoryFileName;
   static const char* kPrompt;