updates 2001.11.22

Folks, those of you who watch the ark-commits list will have
seen some recent activity.  You are unlikely to stub your
toe on most of it; a change to sidai/package/openssh.xml can
only matter if you try to build OpenSSH, for instance.

I have a checked in some riskier code, to the ARK engine
(ARK/arkbase/ark/).  Your toes are probably safe from it,
too, but I thought I would mention it...

* I am still not 100% happy with the "down hosts" code; that
  is, you run with --down-hosts=host13,host41 and ARK will
  do The Right Thing (TM) unless it really really *needs*
  host13 or host41 to be up.

* I've made the caching of info out of the .xml files "time
  out"; that is, after 60 seconds, the engine will re-read
  the .xml files, in case they've changed.  (This matters
  for the Webware stuff; the demo is alive again, btw --
  http://slinger.dcs.gla.ac.uk/systems/ARK/siteThings?what=host )

  There are probably some nasty timing bugs because of this
  change but... (a) "it's working for me", and (b) you are
  unlikely to hit them.

More later, maybe.

Will