- hpt should delete lockfile if terminated by SIGINT/SIGTERM for win32 and dos
- hpt should sort pkts in the inbound directories in order of the date/time.
  So older pkts are processed before newer ones.
- netmailarea should be packed when found in echotoss.log
- divide hpt into several programs:
  tosser
  packer
  scanner
  poster
  linker
  areafix
- put pkts into an existing archive
- zone-gating
- nodelist access
- real hub-routing
- regexps for routing
- go on holiday 
