.arcconfig

tests: convert bisect support regex to binary

The bisection feature of run-tests still fails tests with this because
bisect itself doesn't work yet. We'll get there.

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