Improve anonymous comments by recording name and address

I like to leave comment posting enabled for "anonymous" users, but I don't like the fact that the database structure doesn't allow for names or addesses attached to those.

This is a simple client-side (javascript based) patch that modifies the form for anonymous comment posters and forces them to enter a "name" and an address.

Upon checking, then the comment is modified as follows:

Name [address] wrote:

The original comment

It would be great if this was implemented server side (as it's not very safe done this way) but at least I can track down whoever posts comments on the site.

Given its client-side implementation, though, now people cannot preview their comments anymore.

It would be a great feature for 1.4 final (and shouldn't be a big change to implement it on the server side, just a couple of extra parameters to track in the tiny comment-posting workflow.

Attached is a patch against 1.4-DR4a, you can see it running on http://blossom.betaversion.org/~pier/