Add TODO comment on locking nodes from the address list.

it on my system.

Re-populate the address list with 5D addresses... binkp.js fills it with
4D ones.

in the .try files.

Treat a password of '-' the same as an undefined password in binkit.js.

To fully comply with the binkp/1.1 (FSP-1024) spec, we need to rescan the
outbound after sending an M_EOB... this shouldn't actually be necessary
though since we're holding the .bsy lock the whole time, and nothing else
is allowed to add stuff (per FTS-5005).  This is mostly for FREQs, so once
the req handler is in there, I'll likely ignore this requirement.

Still TODO before callout support is "complete":
1) Enhance handling of received file names
   a) On pkt or bundle files, place in sbbsecho inbound directory. with
      a known unique name... don't rely on the remote to make one up.
   b) For req files, handle the file request directly.
   c) All other files, place somewhere else for processing.
2) Perform actions when files are received... touch semaphores, parse TIC, etc.
3) Update flo files after a partial run... mark successful transfers as skip.
4) Put real data into the .try file.

that would trigger a callout (since it's never handled).

an issue in 2038).

Most if it is still TODO.