Making a HTTP request from a URL

Initial test for initiating a URL read from a change object (FILE operation)
no content is actually read from the web server yet.

The "from" spec can either be a file spec, in which case the URL is read
from the first line of the file OR a direct URL reference, prefixed by http://

In either case INI file mappings are applied to the from file name/URL

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idkbase note 44