ENH rename eval / pseudolikelihood to score_samples

doc/modules/density.rst

examples/mixture/plot_gmm_pdf.py

examples/neighbors/plot_kde_1d.py

examples/neighbors/plot_species_kde.py

sklearn/hmm.py

sklearn/mixture/dpgmm.py

sklearn/mixture/gmm.py

sklearn/mixture/tests/test_dpgmm.py

sklearn/mixture/tests/test_gmm.py

sklearn/neighbors/kde.py

sklearn/neighbors/tests/test_kde.py

sklearn/neural_network/rbm.py

sklearn/neural_network/tests/test_rbm.py

sklearn/tests/test_hmm.py