Compatibility with Qt6 does not wreck Qt5

CMakeLists.txt

FSL/CMakeLists.txt

GeoModelVisualization/CMakeLists.txt

GeoModelVisualization/GXClashPointSystems/CMakeLists.txt

GeoModelVisualization/GXHitDisplaySystems/CMakeLists.txt

GeoModelVisualization/GXTrackDisplaySystems/CMakeLists.txt

GeoModelVisualization/GeoModelExplorer/CMakeLists.txt

GeoModelVisualization/VP1Base/CMakeLists.txt

GeoModelVisualization/VP1Base/VP1Base/AnimationSequencer.h

...sualization/VP1Base/VP1Base/IVP12DDetViewsChannelWidget.h

GeoModelVisualization/VP1Base/VP1Base/IVP12DDetViewsSystem.h

...sualization/VP1Base/VP1Base/IVP12DStandardChannelWidget.h

GeoModelVisualization/VP1Base/VP1Base/IVP12DSystem.h

GeoModelVisualization/VP1Base/VP1Base/IVP12DSystemSimple.h

...lVisualization/VP1Base/VP1Base/IVP1ChannelWidgetFactory.h

GeoModelVisualization/VP1Base/VP1Base/VP12DExaminerViewer.h

GeoModelVisualization/VP1Base/VP1Base/VP1CollectionWidget.h

...Visualization/VP1Base/VP1Base/VP1GraphicsItemCollection.h

GeoModelVisualization/VP1Base/VP1Base/VP1GraphicsView.h

GeoModelVisualization/VP1Base/VP1Base/VP1TabWidget.h