speed up update_pending in bin/update

[pabs3]

This patch changes the update script so that loading
and saving the per-list pending.pck files is done once
per list instead of once per pending request. This
results in a significant speedup (seconds per list
instead of minutes).

[pabs3 (pabs3-users-sf)]

The file update-pending-speedup.patch was added: A patch t ospeed up bin/update significantly.

[pabs3 (pabs3-users-sf)]

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This is against 2.1.6b3 by the way.

[tkikuchi (tkikuchi-users)]

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Sorry, but I'm declined to integrate this patch because,
1. patch is lengthy
2. the work is only one time (pre 2.1.4 to 2.1.5)
3. better bin/discard the pending requests than update at all.

Maybe, Barry have a different view.

[pabs3 (pabs3-users-sf)]

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Thats a shame :(

1. Do you know of a way to access private functions of
subclasses of MailList? I don't know enough python to do it :(
2. Yes, but it would be good if the downtime on this was
minutes instead of hours.
3. And generate complaints when people accuse list admins of
covering up their questions/discarding posts?

What would it take to get this patch into shape for mailman
2.1.6/2.1.7?