python3 urllib compatibility
python3 urlllib fix for nuc_data_make
remove unused imports
python3 urllib compatibility in ensdf.py
add basestring alias and absolute utils import
Use division from __future__
import division from future in data.pyx
encoding fixes for python 3
fix StringIO import in python3
Use unicode literals in cython layer
Merge branch 'py3k' of https://github.com/pyne/pyne into py3k
Merge pull request #400 from crbates/py3k

Add basic python3 compatilbility