STYLE:add references to Jan Wegner contributions in source files

Code/Common/otbGamma.h

@@ -9,6 +9,8 @@
   Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
   See OTBCopyright.txt for details.
 
+  This code is from a Jan Wegner contribution.
+
 
      This software is distributed WITHOUT ANY WARRANTY; without even
      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
@@ -27,7 +29,7 @@
 namespace otb 
 {
 /** \class Gamma
- *  \brief Gamma function (necessary for Fisher distribution 
+ *  \brief Gamma function
  *
  */
 class Gamma {

Code/Markov/otbMRFEnergyFisherClassification.h

@@ -9,6 +9,8 @@
   Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
   See OTBCopyright.txt for details.
 
+  This code is from a Jan Wegner contribution.
+
 
      This software is distributed WITHOUT ANY WARRANTY; without even
      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR

Examples/Markov/MarkovClassification3Example.cxx

@@ -37,6 +37,7 @@
 //  regularization energy is defined by a Potts model and the fidelity or likelihood energy is modelled by a
 //  Fisher distribution.
 //  The parameter of the fisher distribution was determined for each class in a supervised step. ( See the File OtbParameterEstimatioOfFisherDistribution )
+//  This example is a contribution from Jan Wegner.
 //
 // Software Guide : EndLatex
 

Testing/Code/Markov/otbMRFEnergyFisherClassification.cxx

@@ -9,6 +9,7 @@
   Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
   See OTBCopyright.txt for details.
 
+  This code is from a Jan Wegner contribution.
 
      This software is distributed WITHOUT ANY WARRANTY; without even
      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR