mimic the jsc shell function run() for latest sunspider

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index a30ffc015ccc53b0b9ac5ba83f3c95df93bc1acb..6c72726931d668768e7ea6cc44e1cde5c3c280f1 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -40,6 +40,7 @@
 #include "snapshot.h"
 #include "extensions/externalize-string-extension.h"
 #include "extensions/gc-extension.h"
+#include "extensions/run-extension.h"
 
 namespace v8 {
 namespace internal {
@@ -97,6 +98,7 @@ void Bootstrapper::Initialize(bool create_heap_objects) {
   extensions_cache_.Initialize(create_heap_objects);
   GCExtension::Register();
   ExternalizeStringExtension::Register();
+  RunExtension::Register();
 }
 
 
@@ -1796,6 +1798,7 @@ bool Genesis::InstallExtensions(Handle<Context> global_context,
 
   if (FLAG_expose_gc) InstallExtension("v8/gc");
   if (FLAG_expose_externalize_string) InstallExtension("v8/externalize");
+  if (FLAG_expose_run) InstallExtension("v8/run");
 
   if (extensions == NULL) return true;
   // Install required extensions