mq: check subrepo synchronizations against parent of workdir or other appropriate context Before this patch, MQ checks each subrepo synchronizations against the working directory context, so ".hgsubstate" updating is not imported into MQ revision correctly in cases below: - qrefresh when current ".hgsubstate" is already synchronized with each subrepos: you can reproduce this easily by just twice or more qrefresh invocations - qnew just after rollback of commit which updates ".hgsubstate" This patch resolves this by checking subrepo states against: - the parent of "qtop" for qrefresh, or - the parent of working context otherwise