[packagekit] Notes on UI notifications

[Jud Craft]

(Note:  little actual knowledge of packagekit design)

When PackageKit fires a notification to the user using LibNotify (I
believe that's right), is it possible to set the notification so that
it will not time out?

Something critical such as "Your system has just been auto-updated"
should not be missed by the user -- wouldn't it make more sense to
require them to manually close that popup, as opposed to letting it
fade out?  (On F9's Gnome-PackageKit, I believe its popups currently
time out).

It is true that it's too late for user decision to change the
program's action:  by the time the popup arrives, it's too late.  But
a user should never miss realizing that their system has been updated,
if they step away from the computer for a few minutes for example.