Fload does not set the 'autoload property

[Juanma Barranquero]

A bug (I think) reported in the pre-22.1 past:

Let's assume a simple test.el with:

;;;; test.el ;;;;
(defun test-fun () (interactive) t)
(provide 'test)
;;;;;;;;;;;;;;;;;

Then, if you define an interactive autoload for the function, and load
it through the autoload mechanism:

 M-: (autoload 'test-fun "test" nil t) [RET]
 M-x test-fun [RET]

the autoload spec gets saved:

 (get 'test-fun 'autoload) => ("test" nil t nil)

However, if you load test-fun by loading or requiring test.el:

 M-: (autoload 'test-fun "test" nil t) [RET]
 M-x load-library [RET] test [RET]

the autoload spec is not saved:

 (get 'test-fun 'autoload) => nil

             Juanma