Log Message:
sysutils/bup: Update to 0.32

(This commit message rides a trivial comment change, and is what
should have been on the 0.32 update earlier.  Thanks again to wiz who
amazingly reads all the commit messages carefully.)

Notable changes in 0.32 since 0.31)
===================================

* Python 3 is now preferred.  Python 2 support is deprecated, and it's
  possible that we'll stop new development for Python 2 fairly soon.
  If so, we'll probably continue to fix bugs in the last Python 2
  compatible version for a while, but please make plans to migrate.

  At the moment, ./configure doesn't explicitly look for any python
  newer than python3.8 by default (though one might be selected by the
  eventual python3 fallback).  If desired, you can explicitly select a
  version like this:

      PYTHON=python3.9 ./configure

* With Python 3.9, the command line reported in tools like `ps` and
  `top` will be `python...` rather than `bup...`.  This was caused by
  an upstream change that appears to have been reverted.  We're likely
  to avoid the issue entirely in a future relese.

Bugs
----

* A number of Python 3 compatibility problems have been fixed.

* `bup web` should no longer crash when attempting to listen on IPV6
  interfaces.

* `bup restore -vv` should no longer crash when printing paths with
  Python 3.

* `bup --prune-older --pretend` should format the plus/minus lines
  correctly now.

* The `TTY_WIDTH` should now be correctly propagated to subprocesses
  and remotes..

* Errors encountered while writing packfiles should be handled more
  carefully.

* Some issues with the handling of integral type signs and sizes on
  the C side have been fixed.

Build and install
-----------------

* The tests are now handled by pytest.  See the
  [README](../README#getting-started) for the additional dependency
  information and further instructions.

Thanks to (at least)
====================

Christian Brabandt, Greg Troxel, Gustavo Goretkin, Jean-Paul Marmorat,
Johannes Berg, Karl-Philipp Richter, Rob Browning, and danpawlik