bug#8039: appt-add problems

[Hobbit]

>(setq appt-message-warning-time 6
>         appt-display-interval 2)

I tried this code snippet. It seems to solve problem by 99%. The only
minus is that on deadline Emacs tells that "Appointment in 1 min."
instead of "Appointment now" (and when "Appointment in 5 min."
it means it will be in 4 minutes).


The results are in the tables. The first column shows when Emacs
displays warnings and second shows what time was at that moment (by
h@localhost$ date)
         
         
If I execute M-x appt-add with deadline at 11:32:

| Appointment in 5 min. | 11:28 |
| Appointment in 3 min. | 11:30 |
| Appointment in 1 min. | 11:32 |

If I execute M-x appt-add with deadline at 11:39:

| Appointment in  5 min. | 11:35 |
| Appointment in  3 min. | 11:37 |
| Appointment in  1 min. | 11:39 |