Fix remaining declare-function issues on master

* lisp/org-list.el (org-export-create-backend):
Indicate that FN is not a defun.
* lisp/org-list.el (org-export-create-backend):
(org-export-data-with-backend):
(org-export-get-backend):
(org-export-get-environment):
(org-export-get-next-element):
(org-export-with-backend):
Correct source file name.
* lisp/org.el (calendar-check-holidays):
(org-agenda-format-item):
Correct argument list.

lisp/org-list.el

@@ -120,14 +120,14 @@
 (declare-function org-element-update-syntax "org-element" ())
 (declare-function org-entry-get "org"
 		  (pom property &optional inherit literal-nil))
-(declare-function org-export-create-backend "org-export" (&rest rest))
-(declare-function org-export-data-with-backend "org-export" (data backend info))
-(declare-function org-export-get-backend "org-export" (name))
-(declare-function org-export-get-environment "org-export"
+(declare-function org-export-create-backend "ox" (&rest rest) t)
+(declare-function org-export-data-with-backend "ox" (data backend info))
+(declare-function org-export-get-backend "ox" (name))
+(declare-function org-export-get-environment "ox"
 		  (&optional backend subtreep ext-plist))
-(declare-function org-export-get-next-element "org-export"
+(declare-function org-export-get-next-element "ox"
 		  (blob info &optional n))
-(declare-function org-export-with-backend "org-export"
+(declare-function org-export-with-backend "ox"
 		  (backend data &optional contents info))
 (declare-function org-fix-tags-on-the-fly "org" ())
 (declare-function org-get-indentation "org" (&optional line))

lisp/org.el

@@ -109,7 +109,7 @@ sure that we are at the beginning of the line.")
   "Matches a headline, putting stars and text into groups.
 Stars are put in group 1 and the trimmed body in group 2.")
 
-(declare-function calendar-check-holidays "holidays" (&optional date))
+(declare-function calendar-check-holidays "holidays" (date))
 (declare-function cdlatex-environment "ext:cdlatex" (environment item))
 (declare-function org-add-archive-files "org-archive" (files))
 (declare-function org-agenda-entry-get-agenda-timestamp "org-agenda" (pom))
@@ -4428,7 +4428,7 @@ This is needed for font-lock setup.")
 (declare-function org-agenda-copy-local-variable "org-agenda" (var))
 (declare-function org-agenda-format-item
 		  "org-agenda"
-		  (extra txt &optional level category tags dotime noprefix
+		  (extra txt &optional level category tags dotime
 			 remove-re habitp))
 (declare-function org-agenda-maybe-redo "org-agenda" ())
 (declare-function org-agenda-new-marker "org-agenda" (&optional pos))