This forces us to verify the build and test suite completes without
the legacy python bindings.
As of this commit the legacy python bindings are unsupported by
notmuch. They are provided in contrib/ for now, but will most likely
eventually be removed from there as well. We recommend that
downstream/distro packagers phase out their packages for the legacy
python bindings.
Many of the external links found in the notmuch source can be resolved
using https instead of http. This changeset addresses as many as i
could find, without touching the e-mail corpus or expected outputs
found in tests.
Currently, http://packages.python.org/notmuch/ goes through a series
of redirections and ends up pointing to readthedocs. Since we're
using readthedocs directly anyway, just point to it directly.
readthedocs are also now sensibly using a separate domain
(readthedocs.io) for their hosted documentation as distinct from their
own domain (readthedocs.org), so use the correct tld.
The old instructions were telling users to do "easy_install cnotmuch"
which installed some old, stale bindings. The new instructions should
be much more effective.
