Merge branch 'wip-tmonseigne-riemannian-update' into 'master'

...iemannian/bci-examples/2.1-Matrix-Classifier-Training.xml

...riemannian/bci-examples/2.2-Matrix-Classifier-Testing.xml

...ssing/riemannian/box-tutorials/1.4-Classifier-Trainer.xml

...ssing/riemannian/box-tutorials/1.5-Classifier-Testing.xml

.../src/boxes/ovpCBoxAlgorithmCovarianceMatrixCalculator.cpp

...an/src/boxes/ovpCBoxAlgorithmCovarianceMatrixCalculator.h

...boxes/ovpCBoxAlgorithmCovarianceMatrixToFeatureVector.cpp

...an/src/boxes/ovpCBoxAlgorithmCovarianceMeanCalculator.cpp

...n/src/boxes/ovpCBoxAlgorithmMatrixClassifierProcessor.cpp

...ian/src/boxes/ovpCBoxAlgorithmMatrixClassifierProcessor.h

...ian/src/boxes/ovpCBoxAlgorithmMatrixClassifierTrainer.cpp

...nnian/src/boxes/ovpCBoxAlgorithmMatrixClassifierTrainer.h

...sing/riemannian/src/classifier/CMatrixClassifierFgMDM.cpp

...sing/riemannian/src/classifier/CMatrixClassifierFgMDM.hpp

...ng/riemannian/src/classifier/CMatrixClassifierFgMDMRT.cpp

...ng/riemannian/src/classifier/CMatrixClassifierFgMDMRT.hpp

...essing/riemannian/src/classifier/CMatrixClassifierMDM.cpp

...essing/riemannian/src/classifier/CMatrixClassifierMDM.hpp

.../riemannian/src/classifier/CMatrixClassifierMDMRebias.cpp

.../riemannian/src/classifier/CMatrixClassifierMDMRebias.hpp