Silence byte-compiler under 'make single'

The org-list and org-priority warnings would show up when these
changes made their way to the Emacs repo.  (The ob-eval warning
wouldn't because string-empty-p has been moved to simple.el in Emacs's
master branch.)

lisp/ob-eval.el

@@ -31,6 +31,8 @@
 (require 'org-macs)
 (org-assert-version)
 
+(eval-when-compile (require 'subr-x))  ; For `string-empty-p', Emacs < 29
+
 (defvar org-babel-error-buffer-name "*Org-Babel Error Output*")
 (declare-function org-babel-temp-file "ob-core" (prefix &optional suffix))
 

lisp/org-list.el

@@ -83,6 +83,7 @@
 (require 'org-macs)
 (require 'org-compat)
 (require 'org-fold-core)
+(require 'org-footnote)
 
 (defvar org-M-RET-may-split-line)
 (defvar org-adapt-indentation)

lisp/org-pcomplete.el

@@ -50,6 +50,7 @@
 (declare-function org-get-tags "org" (&optional pos local))
 (declare-function org-link-heading-search-string "ol" (&optional string))
 (declare-function org-tag-alist-to-string "org" (alist &optional skip-key))
+(declare-function org-time-stamp-format "org" (&optional with-time inactive custom))
 
 (defvar org-babel-common-header-args-w-values)
 (defvar org-current-tag-alist)