Basic compatibility with Python 3
Compatibility with Python 2.6 2.7 3.2 3.3 3.4
Upgrade to swig 3.0 and fix issue with cvar
Provide overwritten pystrings fragments
Port all examples
Fix FILE typemap (compatibility with C89)
Decode Popen output in setup_extra
Do DECREF after fdopen
Merge pull request #19 from Kagami/python3

Python 3 compatibility