Add {libsvm, liblinear} from MLPy

[fabianp]

Those guys are doing some really nice things with Cython + {libsvm, liblinear}

[hlin117]

What's the difference between MLPy's implemention versus scikit-learn's interface with liblinear (svm.LinearSVC) and libsvm (svm.SVC)?

[fabianp]

Hi, I think they are essentially the same but the bindings are different. Unlike for other libraries, these are non-trivial due to the specific data format of libsvm, that forces us to convert between numpy arrays and that data structure.