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.
Pyfilesystem is a Python module that provides a simplified common
interface to many types of filesystem. Filesystems exposed via
Pyfilesystem can also be served over the network, or 'mounted' on the
native filesystem.
Pyfilesystem simplifies working directories and paths, even if you
only intend to work with local files. Differences in path formats
between platforms are abstracted away, and you can write code that
sand-boxes any changes to a given directory.
Pyfilesystem works with Linux, Windows and Mac.
(And of course, NetBSD.)