add a third query to start / stop

The queries have 'AND AcctStopTime IS NULL', which speeds up
the normal case substantially.  However, we can still have
the case where we get a delayed stop, or where the detail file
is being replayed multiple times.  We therefore want to be able
to insert the record where AcctStopTime is NOT NULL
If there's no Acct-Status-Type, ignore the packet

but still return OK