Merge branch 'master' into sparse-pca

scikits/learn/base.py

scikits/learn/grid_search.py

scikits/learn/linear_model/base.py

scikits/learn/linear_model/bayes.py

scikits/learn/linear_model/coordinate_descent.py

scikits/learn/linear_model/least_angle.py

scikits/learn/linear_model/tests/test_least_angle.py

scikits/learn/metrics.py

scikits/learn/svm/base.py

scikits/learn/svm/setup.py

scikits/learn/svm/src/libsvm/svm.cpp

scikits/learn/svm/tests/test_svm.py

scikits/learn/tests/test_metrics.py