Changes in ftp proxy: make URL parsing simpler by using the

parsed_uri stuff.
+ Add display of the "current directory" in cases where it's
different from the supplied path (e.g., ftp://user@host/ lives
in /home/user, not in /, therefore clicking on "../" in the
starting directory might send us to /home/).
+ When ftp login fails, (esp. when a user name was part of the
URL already), we now return [401 Unauthorized ] to allow the
browser to pop up an authorization dialog. This makes passwords
slightly less visible (they don't appear in the regular log files)
and implements a functionality that other www proxy servers
already offered.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@81967 13f79535-47bb-0310-9956-ffa450edef68