Add support for automatic conversion between chaiscript functions and boost::function. Might merit some look to see how much overhead this adds.

include/chaiscript/dispatchkit/boxed_pod_value.hpp

@@ -251,8 +251,21 @@ namespace chaiscript
           return Boxed_POD_Value(ob);
         }
       };
-  }
+      
+    /**
+     * Cast_Helper for converting from Boxed_Value to Boxed_POD_Value
+     */
+    template<>
+      struct Cast_Helper<const Boxed_POD_Value>
+      {
+        typedef Boxed_POD_Value Result_Type;
 
+        static Result_Type cast(const Boxed_Value &ob)
+        {
+          return Boxed_POD_Value(ob);
+        }
+      };  
+  }
   
 }