FIX: Remove __* from the manifest's "global-exclude": it excludes __init__.py files also. Use "exclude" instead. This is rooted: paths are given relative to the package root directory.

include .hg* *.txt requirement*
include configmix/*.c configmix/*.h
graft docs
graft tests
graft windows-dev
prune docs/_build
exclude __*
global-exclude *.pyc *.pyo