Looking at the "sec" field of the various addresses, every single one starts with a K or an L.   Are these my mysterious (to me) private keys!?
I would never have known without your tip 

Ok groovy.  Having done some manipulation on the pywallet dump (with password) to extract all references to the "sec": field I have what I think are 212 private keys.
Is there nothing else I need from the dump output?
So I install Electum, set a new wallet, tell it to Sweep those keys and I'm good to go?