I would like to second this request. The multi-step process would allow me in my corporate environment to download the file manually and ftp it over to my server which does not have access to the outside world. If I was smart enough to alter the core-upgrade.php file I guess I could still do this on my own but I would have to alter it for each version after I upgrade it, so having this as an added feature would be a big help to me.
-Bob
