Added a EvalCache that caches eval'ed scripts and compiled function boilerpla...

src/objects-inl.h

Index: src/objects-inl.h
===================================================================
--- src/objects-inl.h	(revision 147)
+++ src/objects-inl.h	(working copy)
@@ -314,6 +314,13 @@
 }
 
 
+bool Object::IsEvalCache() {
+  return IsHashTable() &&
+      (this == Heap::eval_cache_global() || 
+       this == Heap::eval_cache_non_global());
+}
+
+
 bool Object::IsPrimitive() {
   return IsOddball() || IsNumber() || IsString();
 }
@@ -1089,6 +1096,7 @@
 CAST_ACCESSOR(DescriptorArray)
 CAST_ACCESSOR(Dictionary)
 CAST_ACCESSOR(SymbolTable)
+CAST_ACCESSOR(EvalCache)
 CAST_ACCESSOR(String)
 CAST_ACCESSOR(SeqString)
 CAST_ACCESSOR(AsciiString)