fix for ange-ftp with VAX

[Dean Kolosiek]

I have a fix for lisp/net/ange-ftp.el with a VAX. The VAX has OpenVMS 
V6.2, and Multinet V4.1(16). This ftp server does not handle the 
'-al' part of the ls command. ange-ftp gives the ls -al command on 
the directory before determining that the host is vms. The result is 
that the first attempt to open a file fails. The problem repeats when 
the server times out the connection and ange-ftp connects again.

I am using Emacs 21.3 on Windows, and ange-ftp.el seems to be the 
same in 21.4. The change I made was to line 3094 in defun 
ange-ftp-file-name-as-directory:

original:

                             (ange-ftp-host-type (car parsed))

update:

                             (ange-ftp-host-type (car parsed) (nth 1 parsed))

This change passes the user name into ange-ftp-host-type so that it 
can ftp to the host to determine what the host type is, figures out 
it is vms, and uses DIR instead of ls -al. Without this change it 
just guesses that the host type is unix.