Remove dead code.

       * src/main.cc
Finished first version of RiceDataTerm. Need to be verified and optimized.

	 * src/RiceDataTerm.hh: New.
	 * src/RiceDataTerm.hxx: New
Update the behavior for RayleighDataTerm to 2 images decomposition.

       * src/RayleighDataTerm.hh: Here.
       * src/RayleighDataTerm.hxx: Here.
Fix 2 images behavior.

    * src/RiceDataTerm.hh: Fix behavior
    * src/RiceDataTerm.hxx: Fix behavior
    * src/TVL0DecompositionMinimizer.hxx: Save the two images.
    * src/main.cc: Change values for alpha and gamma.