Added parallel ISV; corrected test data for UBM training

bob/bio/gmm/algorithm/GMM.py

bob/bio/gmm/algorithm/ISV.py

bob/bio/gmm/script/verify_gmm.py

bob/bio/gmm/script/verify_isv.py

bob/bio/gmm/test/data/gmm_model.hdf5

bob/bio/gmm/test/data/gmm_projected.hdf5

bob/bio/gmm/test/data/gmm_projector.hdf5

bob/bio/gmm/test/data/isv_model.hdf5

bob/bio/gmm/test/data/isv_projected.hdf5

bob/bio/gmm/test/data/isv_projector.hdf5

bob/bio/gmm/test/data/jfa_enroller.hdf5

bob/bio/gmm/test/data/jfa_model.hdf5

bob/bio/gmm/test/data/scores-nonorm-isv-dev

bob/bio/gmm/test/data/scores-ztnorm-isv-dev

bob/bio/gmm/test/test_algorithms.py

bob/bio/gmm/test/test_scripts.py

bob/bio/gmm/tools/__init__.py

bob/bio/gmm/tools/command_line.py

bob/bio/gmm/tools/gmm.py

bob/bio/gmm/tools/isv.py