s/\bcross_val\b/cross_validation/g

doc/modules/classes.rst

doc/modules/cross_validation.rst

examples/applications/face_recognition.py

...ter/plot_feature_agglomeration_vs_univariate_selection.py

examples/gaussian_process/gp_diabetes_dataset.py

examples/grid_search_digits.py

examples/mixture/plot_gmm_classifier.py

examples/plot_permutation_test_for_classification.py

examples/plot_rfe_with_cross_validation.py

examples/plot_roc_crossval.py

examples/svm/plot_svm_anova.py

sklearn/__init__.py

sklearn/cross_validation.py

sklearn/feature_selection/rfe.py

sklearn/grid_search.py

sklearn/linear_model/coordinate_descent.py

sklearn/linear_model/least_angle.py

sklearn/linear_model/tests/test_ridge.py

sklearn/tests/test_cross_validation.py

sklearn/utils/__init__.py