Bug#465865: ssl-cert: Please warn that it will take ages to run

[Russell Coker <russell@coker.com.au>]

Package: ssl-cert
Version: 1.0.15
Severity: normal

Installing on unstable ssl-cert takes more than 10 minutes in the setup
phase due to reading a moderate amount of data from /dev/random.

I am not sure that it needs to do this (the package only got installed
because of dependencies - I have no plans to use SSL on the machine in
question).  Also if it is going to do this it should at least warn the user
that the operation may take some time.