Implement double when binding constants with Sqrat.

Minor chnage in buffer when throwing an exception.

include/sqrat/sqratConst.h

@@ -115,6 +115,20 @@ public:
         return *this;
     }
 
+    /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+    /// Binds an enumeration value
+    ///
+    /// \param name Name of the value as it will appear in Squirrel
+    /// \param val  Value to bind
+    ///
+    /// \return The Enumeration itself so the call can be chained
+    ///
+    /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+    virtual Enumeration& Const(const SQChar* name, const double val) {
+        BindValue<double>(name, val, false);
+        return *this;
+    }
+
     /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
     /// Binds an enumeration value
     ///