style and consistency:

* rename CStatusMessages to CStatusMessageList
* rename NetworkVatlib to CNetworkVatlib
* replace all occurrences of Realname with RealName (correct camel case)
* CSequence method corresponding to CList::append is push_back
* don't compile the qdbuscpp2xml metadata plugin by default
* CAircraftIcao string members always trimmed and capitalized
* added CComSystem::roundTo25KHz
* using epsilon comparison in a couple of places

refs #81

src/blackmisc/statusmessage.h

@@ -95,6 +95,20 @@ namespace BlackMisc
             return QVariant::fromValue(*this);
         }
 
+        /*!
+         * \brief Equal operator ==
+         * \param other
+         * @return
+         */
+        bool operator ==(const CStatusMessage &other) const;
+
+        /*!
+         * \brief Unequal operator ==
+         * \param other
+         * @return
+         */
+        bool operator !=(const CStatusMessage &other) const;
+
         /*!
          * \brief Register metadata
          */
@@ -114,7 +128,6 @@ namespace BlackMisc
          */
         static CStatusMessage getInfoMessage(const QString &message);
 
-
     protected:
         /*!
          * \brief Marshall to DBus