Cleanup in LatentSSVM, allow other SVM base classes.
Cleanup in LatentSSVM, allow other SVM base classes.

pystruct/pystruct,d-mittal/pystruct,wattlebird/pystruct,massmutual/pystruct,massmutual/pystruct,d-mittal/pystruct,wattlebird/pystruct,amueller/pystruct,amueller/pystruct,pystruct/pystruct