config: add --source option to include source of value
Showing the source of each config option is quite useful and not
something the user should have to reach for the `--debug` flag for.
I updates documentation and tests, except for one place in
`test-hgrc.t` where I thought the test might have been intended to
also test that `--debug` results in `ui.quiet` etc being test.
Differential Revision: https://phab.mercurial-scm.org/D10668
# __init__.py - Startup and module loading logic for Mercurial.
#
# Copyright 2015 Gregory Szorc <gregory.szorc@gmail.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
# Allow 'from mercurial import demandimport' to keep working.
import hgdemandimport
demandimport = hgdemandimport