ENH: Replacing the 3 SVM classification applications to handle the OpenCV machine learning framework

DOC: Typo and punctuation correction and clarification of the documentation and menus of the otbTrainImagesClassifier application

ENH: Add measurements of the confusion matrix in the LOG of the otbComputeConfusionMatrix application

ENH: Removal of the numbers of reference and produced labels input parameters in the otbComputeConfusionMatrix application

ENH: Setting the default field name containing the label values to Class in otbComputeConfusionMatrix

ENH: Definition of a format for confusion matrix files in otbComputeConfusionMatrix and otbFusionOfClassifications applications

ENH: clarify OpticalCalibration app by using parameter clamp instead of noclamp which was disturbing

ENH: add vfn option in ValidateImageClassifier application to be consistent with training application.

ENH: add ValidateImagesClassifier application to validate a classification model obtained with TrainMachineLearningImagesClassifier.

ENH: Add an ImageClassifier application that classifies an image using a model obtained with TrainMachineLearningImagesClassifier application.

ENH: Remove useless parameters for opencv svm classification in otbTrainMachineLearningImagesClassifier application.

This classes have been gfork and static variables have been removed to avoid dl.close error in applications.
I used itykv4 version of classes to do the fork.
Forked classes are only use in the BinaryMorphological applications. It is still the internal itkv3
which is used in OTB.
Need to report this problem to ITK in JIRA, when the problem is solve on the ITK side we would safely remove these classes and use ITK classes