py3: convert __doc__ back to bytes in help.py
pycompat.getdoc() is pretty simple, but we wouldn't want to write handling
of None inline.
#require test-repo
$ . "$TESTDIR/helpers-testrepo.sh"
$ cd "$TESTDIR"/..
New errors are not allowed. Warnings are strongly discouraged.
$ hg files "set:(**.py or **.txt) - tests/**" | sed 's|\\|/|g' |
> python contrib/check-config.py