push location log updating up to callers of download

push location log updating up to callers of download

Prep for move --to --from, which needs to download from a src repo
without updating the location log for the local repo, before sending the
content on to the dest repo.

Note that caller of download' already update the log themselves.
See previous commit a422a056f2785999220cde55e07b0fbf999edd44
that pushed it up to download from getViaTmpFrom.

(Also removed in passing a debug print + readline that I accidentially
committed last week on this branch.)

Sponsored-by: Dartmouth College's DANDI project