Added ability to remove prototype from function. In this case, [[Construct]] ...

src/factory.h

Index: src/factory.h
===================================================================
--- src/factory.h	(revision 4462)
+++ src/factory.h	(working copy)
@@ -218,6 +218,8 @@
   static Handle<JSFunction> NewFunction(Handle<String> name,
                                         Handle<Object> prototype);
 
+  static Handle<JSFunction> NewFunctionWithoutPrototype(Handle<String> name);
+
   static Handle<JSFunction> NewFunction(Handle<Object> super, bool is_global);
 
   static Handle<JSFunction> BaseNewFunctionFromSharedFunctionInfo(
@@ -291,6 +293,9 @@
                                                      Handle<Code> code,
                                                      bool force_initial_map);
 
+  static Handle<JSFunction> NewFunctionWithoutPrototype(Handle<String> name,
+                                                        Handle<Code> code);
+
   static Handle<DescriptorArray> CopyAppendProxyDescriptor(
       Handle<DescriptorArray> array,
       Handle<String> key,
@@ -376,6 +381,9 @@
   static Handle<JSFunction> NewFunctionHelper(Handle<String> name,
                                               Handle<Object> prototype);
 
+  static Handle<JSFunction> NewFunctionWithoutPrototypeHelper(
+      Handle<String> name);
+
   static Handle<DescriptorArray> CopyAppendCallbackDescriptors(
       Handle<DescriptorArray> array,
       Handle<Object> descriptors);