Implement enumerations; Moving testing code and data

MANIFEST.in

doc/c_cpp_api.rst

setup.py

xbob/learn/libsvm/__init__.py

xbob/learn/libsvm/data/heart.out

xbob/learn/libsvm/data/heart.svmdata

xbob/learn/libsvm/data/heart.svmmodel

xbob/learn/libsvm/data/heart_no_probs.svmmodel

xbob/learn/libsvm/data/iris.out

xbob/learn/libsvm/data/iris.svmdata

xbob/learn/libsvm/data/iris.svmmodel

xbob/learn/libsvm/include/xbob.learn.libsvm/api.h

xbob/learn/libsvm/main.cpp

xbob/learn/libsvm/pymachine.cpp

xbob/learn/libsvm/test_machine.py

xbob/learn/libsvm/test_trainer.py

xbob/learn/libsvm/version.cpp