Use print() in setup.py
Use 2to3 to build for python 3.x
import_array() returns an int with Python 3.x
Use explicit imports
Use string methods intead of functions
Fix module initialization in Python 3.x
Import print_function in the setup script

This allows setup.py to work with both Python >= 2.6 and Python 3k.
Use print() in biggles.py
More explicit exports
Use PyUnicode instead of deprecated PyString
Add Macports directory in the path
Merge pull request #53 from smaret/python3

Support Python 3k
make _biggles.c module init work for both python3 and python2
relative imports in biggles/__init__.py
put python version check since PyBytes do not exist in older pythons
perform some cleanup
docs
some cleanup
fix pt_min pt_max to work with None, which is no longer considered ordered in python3
fix hammer example for python3