Description of Problem:
the URL parser doesn't properly parse trailing . in hostname part of URL

Steps to reproduce the problem:
1. send or receive a plaintext email with a url formatted as such:
http://scriptkitchen.com./qmail/

Actual Results:
the above link will only go to http://scriptkitchen.com

Expected Results:
it should parse out the full URL http://scriptkitchen.com./qmail/

How often does this happen? 
every time, from what I've seen.

Additional Information:
from http://www.faqs.org/rfcs/rfc2396.html section 3.2.2:
hostname      = *( domainlabel "." ) toplabel [ "." ]
and may be followed by a single "."

Thanks dobey for making me go find the RFC that describes this :)

It's probably not a very common issue in the wild, however it does appear
to be functioning improperly, and should probably evetually be fixed.

It probably affects other versions, however the only version I have on hand
is 1.4.5 running on gentoo linux, so I only posted what I could confirm.