[getdata-devel] Patch for Python 3 Support

[Matthew P. <ge...@mp...>]

Attached is a patch to add Python 3 support to the Python bindings.
Most of the changes are wrapped in preprocessor conditionals and are
related to the int/long and str/unicode changes in Python 3 [1]. The
only visible change for Python 2 is allowing Unicode strings to be
accepted; this breaks support for versions <2.6. If desired, I could
add additional preprocessor conditionals to avoid breaking support.
Currently, bindings are only built for one Python version; it would be
nice to automatically build bindings for both Python 2 and 3, but I'm
not particularly familiar with Autotools. The patch has been tested
with Python 2.7 and 3.4 on Linux Mint 17.3 (Ubuntu 14.04 base).

-Matthew Petroff

[1] https://docs.python.org/3/howto/cporting.html