The currentOpCtx command is undocumented and untested. It should be removed.

This command is a near-clone of the currentOp command; the only difference between the two is currentOpCtx calls reportState() on each client's recovery unit (if a recovery unit is active), and the result is added to the command output.

When this command is removed, RecoveryUnit::reportState() will be unused, and should also be removed.