org.el: Fix bug about cycling

* lisp/org.el (org-cycle-internal-local): Handle
`org-cycle-include-plain-lists'.

Thanks to Bruce Tulloch for reporting this.
This fixes a bug introduced in commit c2aebcee.

lisp/org.el

@@ -6403,11 +6403,15 @@ Use `\\[org-edit-special]' to edit table.el tables"))
 	(setq eos (save-excursion (org-end-of-subtree t t)
 				  (when (bolp) (backward-char)) (point)))
 	(setq has-children
-	      (save-excursion
-		(let ((level (funcall outline-level)))
-		  (outline-next-heading)
-		  (and (org-at-heading-p t)
-		       (> (funcall outline-level) level))))))
+	      (or
+	       (save-excursion
+		 (let ((level (funcall outline-level)))
+		   (outline-next-heading)
+		   (and (org-at-heading-p t)
+			(> (funcall outline-level) level))))
+	       (and (eq org-cycle-include-plain-lists 'integrate)
+		    (save-excursion
+		      (org-list-search-forward (org-item-beginning-re) eos t))))))
       ;; Determine end invisible part of buffer (EOL)
       (beginning-of-line 2)
       (while (and (not (eobp)) ;This is like `next-line'.