future Date: field for Packages files

[Dan Jacobson <jidanni@jidanni.org>]

Regarding a future Date: field for each package in Packages files,
* Should the field be called Date: or Time:?
* Should it be like "Mon, 18 Aug 2003 22:09:30 GMT" or "1061315862"?
* Should it refer to the time the developer finished wrapping the
  package, or the time it entered the distribution?
Those questions are for you implementers to decide.
I merely look forward the day when one can tell apt-show-versions
--upgradeable, or grep-available, that one is only interested in
versions that have been around for more (or less) than X days.