HDF5IO - updated dependencies + some clean-up
HDF5IO - updated dependencies + some clean-up

git-svn-id: 6a9fbfbdaf83e643a03002ecccfb9853040a57b7@426 acbc63fc-6c75-0410-9d68-8fa99cba188a

mschmidt87/python-neo,JuliaSprenger/python-neo,rgerkin/python-neo,tkf/neo,SummitKwan/python-neo,INM-6/python-neo,Blackfynn/python-neo,mgr0dzicki/python-neo,tclose/python-neo,amchagas/python-neo,CINPLA/python-neo,apdavison/python-neo,NeuralEnsemble/python-neo,guangxingli/python-neo,jakobj/python-neo,theunissenlab/python-neo,npyoung/python-neo,samuelgarcia/python-neo