Configurable Access On Value Transitions?

[Gervase Markham]

> Rather than inventing a new language Perl may be a very good language in 
> which to capture site-specific rules.
> If we can ensure that CheckCanChangeField has easy access to sufficient 
> information and is structured in a manner that causes site-changes not 
> to generally conflict with BZ update, this is a perfectly good way to go.

There is now a patch attached to
http://bugzilla.mozilla.org/show_bug.cgi?id=168804
(Document CheckCanChangeField so sites can modify it for local needs)
which does what I've been suggesting. As well as changing the code, It 
includes a new section documenting how it works for the Bugzilla Guide. 
If people could have a look at what I've done and comment in the bug, 
that would be great.

Irrespective of whether we eventually have a more sophisticated 
implementation, I believe this is worth doing now.

Gerv