ob-J: Add missing keywords in defcustom

* lisp/ob-J.el (org-babel-J-command): Add missing keywords.

lisp/ob-J.el

@@ -29,18 +29,19 @@
 ;; (available in MELPA).
 
 ;;; Code:
-(require 'ob)
 
+(require 'ob)
+
+(declare-function org-trim "org" (s &optional keep-lead))
+(declare-function j-console-ensure-session "ext:j-console" ())
 
-(defcustom org-babel-J-command
-  "jconsole"
+(defcustom org-babel-J-command "jconsole"
   "Command to call J."
   :group 'org-babel
+  :version "25.2"
+  :package-version '(Org . "9.0")
   :type 'string)
 
-(declare-function org-trim "org" (s &optional keep-lead))
-(declare-function j-console-ensure-session "ext:j-console" ())
-
 (defun org-babel-expand-body:J (body _params &optional _processed-params)
   "Expand BODY according to PARAMS, return the expanded body.
 PROCESSED-PARAMS isn't used yet."