Merge branch 'ivector' into 'master'

bob/learn/em/__init__.py

bob/learn/em/data/ivector_fit_data.hdf5

bob/learn/em/data/ivector_gs1.hdf5

bob/learn/em/data/ivector_gs2.hdf5

bob/learn/em/data/ivector_ref_nosigma_step1.hdf5

bob/learn/em/data/ivector_ref_nosigma_step2.hdf5

bob/learn/em/data/ivector_ref_step1.hdf5

bob/learn/em/data/ivector_ref_step2.hdf5

bob/learn/em/data/ivector_results.hdf5

bob/learn/em/data/ivector_test_data.hdf5

bob/learn/em/ivector.py

bob/learn/em/test/test_ivector.py

bob/learn/em/test/test_linear.py

bob/learn/em/wccn.py

bob/learn/em/whitening.py