ENH: rename Filename to InputFilename and use OutputFilename where needed

...ns/CartographicDBValidation/otbDSFuzzyModelEstimation.cxx

...ns/CartographicDBValidation/otbVectorDataDSValidation.cxx

Applications/Classification/otbComputeImagesStatistics.cxx

Applications/Classification/otbImageSVMClassifier.cxx

Applications/Classification/otbKMeansClassification.cxx

Applications/Classification/otbTrainSVMImagesClassifier.cxx

...cations/Classification/otbValidateSVMImagesClassifier.cxx

Applications/Radiometry/otbOpticalCalibration.cxx

Applications/Test/otbTestApplication.cxx

Applications/Utils/otbColorMapping.cxx

Applications/Utils/otbDEMConvert.cxx

Applications/Utils/otbKmzExport.cxx

Applications/Utils/otbMultiResolutionPyramid.cxx

Applications/Utils/otbSplitImage.cxx