.arcconfig

profiling: pass bytes to `_()` and `error.Abort()`

And of course `other_tool_name` is str too, so that needs to be converted.  The
type hints from PyCharm say `sys.monitoring.get_tool()` can return None, so
handle that case explicitly before it trips up pytype.

{
    "conduit_uri": "https://phab.mercurial-scm.org/api",
    "phabricator.uri": "https://phab.mercurial-scm.org/",
    "repository.callsign": "HG",
    "arc.land.onto.default": "@",
    "base": "hg:.^"
}