mq: fix failing qrefresh test
Additions to test-mq-qrefresh.t in
f08df4d38442 (mq: ignore subrepos
(
issue2499)) were originally based on a version prior to
d0e21c5fde41
(subrepo: handle missing subrepo spec file as removed). This fixes a
test failure that resulted from the former being applied after the
latter, noticed by abuehl.
makedate: abort on negative timestamps (
issue2513)
catches weird clock settings