wip/py-xcffib 1.12.0 NetBSD

Python binding to the X Window System protocol via libxcb.

xcffib is intended to be a (mostly) drop-in replacement for xpyb. xpyb has an inactive upstream, several memory leaks, is python2 only and doesn't have pypy support. xcffib is a binding which uses cffi, which mitigates some of the issues described above. xcffib also builds bindings for 27 of the 29 (xprint and xkb are missing) X extensions in 1.10.