COMP: remove double underscore in header guard

Modules/Visualization/Ice/src/otbGlVectorActor.cxx

Modules/Visualization/Mapla/include/mvdMaplaApplication.h

Modules/Visualization/Mapla/include/mvdMaplaMainWindow.h

Modules/Visualization/Monteverdi/include/mvdApplication.h

Modules/Visualization/Monteverdi/include/mvdMainWindow.h

...s/Visualization/Monteverdi/include/mvdPreferencesDialog.h

...ualization/MonteverdiCore/include/mvdAbstractImageModel.h

...ualization/MonteverdiCore/include/mvdAbstractLayerModel.h

...s/Visualization/MonteverdiCore/include/mvdAbstractModel.h

.../Visualization/MonteverdiCore/include/mvdAbstractWorker.h

Modules/Visualization/MonteverdiCore/include/mvdAlgorithm.h

...alization/MonteverdiCore/include/mvdApplicationsBrowser.h

.../Visualization/MonteverdiCore/include/mvdBackgroundTask.h

Modules/Visualization/MonteverdiCore/include/mvdCore.h

Modules/Visualization/MonteverdiCore/include/mvdDataStream.h

...sualization/MonteverdiCore/include/mvdFilenameInterface.h

.../Visualization/MonteverdiCore/include/mvdHistogramModel.h

...alization/MonteverdiCore/include/mvdI18nCoreApplication.h

...s/Visualization/MonteverdiCore/include/mvdImageImporter.h

...lization/MonteverdiCore/include/mvdImagePlacenameLoader.h