We are building projects from CVS, and the "official" email address of the
CVS-users are not trivially derivable from the CVS logins which Hudson uses in
the "People list".

It would be beneficial if an email address could be attached to the "people
entry" and it be used for all correspondence for the CVS user.

I have currently worked around it with a complex hardcoded regular expression,
but would rather that people could administer this themselves.