#41 [Courier] does not correctly parse some relative links

[Devin Chalmers]

Locations of the form http://example.com/script.php?/path/to/resource
are treated by Courier as residing in the directory /script.php?/, instead
of the root directory.

Example: at http://www.unna.org/view.php?/utilites, clicking a link to
"view.php?/utilites/dates_enhancements" leads Courier to try to load
the URL http://www.unna.org/view.php?/view.php?/utilites/
dates_enhancements, making the UNNA archive unbrowseable by
Newtons.