update
setup correctly install prefix for setup.py
update cbindings for DirectStorageDataSet and libsvm loading.
python: dataset can be loaded now from libsvm parser.
python: refactor optimization classes.
Uses now a shared StoppingCriteria instance.
python: add interface to OPENANN_LOG(level, text)
Merge branch 'libsvm' of https://github.com/Ruun/OpenANN