Backport commit 32763dac4 from Emacs

Since 'add-to-list', being a plain function, cannot access lexical
variables, such use must be rewritten for correctness.
(Some instances actually do work thanks to a compiler macro,
but it's not something code should rely on.)

* lisp/org.el (org-reload): Replace add-to-list with push.

Replace add-to-list to lexical variable with push (bug#39373)
32763dac46e61cc34e8fe4d19df4905d09c1a27f
Mattias Engdegård
Sat Feb 1 22:27:23 2020 +0100

lisp/org.el

@@ -18709,13 +18709,14 @@ With prefix arg UNCOMPILED, load the uncompiled versions."
 			      (and (string= org-dir contrib-dir)
 				   (org-load-noerror-mustsuffix (concat contrib-dir f)))
 			      (and (org-load-noerror-mustsuffix (concat (org-find-library-dir f) f))
-				   (add-to-list 'load-uncore f 'append)
+				   (push f load-uncore)
 				   't)
 			      f))
 			lfeat)))
     (when load-uncore
       (message "The following feature%s found in load-path, please check if that's correct:\n%s"
-	       (if (> (length load-uncore) 1) "s were" " was") load-uncore))
+	       (if (> (length load-uncore) 1) "s were" " was")
+               (reverse load-uncore)))
     (if load-misses
 	(message "Some error occurred while reloading Org feature%s\n%s\nPlease check *Messages*!\n%s"
 		 (if (> (length load-misses) 1) "s" "") load-misses (org-version nil 'full))