Remove devel/py-ctypes (only needed by and supporting python24).
Remove PYTHON_VERSIONS_ACCEPTED and PYTHON_VERSIONS_INCOMPATIBLE
lines that just mirror defaults now.
Miscellaneous cleanup while editing all these files.
JSON is a lightweight data-interchange format. It's often used for
exchanging data between a web server and user agent. This module
aims to produce a library for serializing and deserializing JSON
that conforms strictly to RFC 4627.