Ref T683, "updateOwnSituationAndGroundElevation"

* function to use own positions "on ground" to calculate ground elevation
* use this based on settings
* adjusted simulators code

src/plugins/simulator/emulated/simulatoremulated.cpp

@@ -251,7 +251,7 @@ namespace BlackSimPlugin
                 }
             }
 
-            return this->updateOwnSituation(situation);
+            return this->updateOwnSituationAndGroundElevation(situation);
         }
 
         bool CSimulatorEmulated::changeInternalParts(const CAircraftParts &parts)