Postgresql update

[Richard Pyne]

There is a desparate need to at least warn that an update is 
going to break a running system. Something even as simple as 
listing version numbers when listing what modules are being 
updated on a 'lunar update' would go a long way toward making 
updates less nerve racking.

Upgrading to Postgresql 8.x from 7.x requires dumping the 
databases with the 7.x version and then re-loading them after 
the upgrade. This is not an uncommon requirement.

Luckily, I learned that this upgrade was going to break things 
on a non-critical system.

--Richard