Fix map space explosion from changing the arguments and caller properties on native functions.

src/v8natives.js

Index: src/v8natives.js
===================================================================
--- src/v8natives.js	(revision 9124)
+++ src/v8natives.js	(working copy)
@@ -55,15 +55,6 @@
     var f = functions[i + 1];
     %FunctionSetName(f, key);
     %FunctionRemovePrototype(f);
-    // We match firefox on this, but not Safari (which does not have the
-    // property at all).
-    %IgnoreAttributesAndSetProperty(f, "caller",
-                                    null,
-                                    DONT_ENUM | DONT_DELETE);
-    %IgnoreAttributesAndSetProperty(f, "arguments",
-                                    null,
-                                    DONT_ENUM | DONT_DELETE);
-
     %SetProperty(object, key, f, attributes);
     %SetNativeFlag(f);
   }