The fix's own TestReplay201 reads what #273 added (sendScope.puttingBack,
recordedKept's core keep, the condition), so it cannot be laid over the
commit before. TestReplay201ThePlansSend composes a plan's send to the
control node through keepingRecorded, planFor and declarationFor and holds
that it carries the controller the machine was last sent, not the older
record; it fails on 84deb53^1 and passes on 84deb53. For mesh-lab's R201
(hq issue 201).