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().