fetch and parse the directory index from a web server

 WWW::IndexParser is a module that uses LWP to fetch a URL from a web
 server. It then atempts to parse this page as if it were an auto
 generated index page. It returns an array of WWW::IndexParser::Entry
 objects, one per entry in the directory index that it has found. Each
 Entry has a set of methods: filename(), time(), size(), and others if
 supported by the autoindex generated: type() and size_units().