Merge branch 'master' into 2010-09-09-CxScript

Conflicts:
	include/chaiscript/dispatchkit/bad_boxed_cast.hpp

include/chaiscript/dispatchkit/dynamic_cast_conversion.hpp

@@ -45,6 +45,7 @@ namespace chaiscript
     {
       public:
         virtual Boxed_Value convert(const Boxed_Value &derived) = 0;
+
         const Type_Info &base()
         {
           return m_base;
@@ -60,6 +61,8 @@ namespace chaiscript
         {
         }
 
+        virtual ~Dynamic_Conversion() {} 
+
       private:
         Type_Info m_base;
         Type_Info m_derived;