using hashes to perform comparisons between blackmisc value objects stored inside of QVariant

refs #81

src/blackmisc/aviocomsystem.h

@@ -87,6 +87,15 @@ namespace BlackMisc
                 return QVariant::fromValue(*this);
             }
 
+            /*!
+             * \brief Value hash
+             * \return
+             */
+            virtual uint getValueHash() const
+            {
+                return CModulator::getValueHash();
+            }
+
             /*!
              * \brief Constructor
              * \param name