Silence byte-compiler under 'make single'

These are warnings that would show up when these changes made their
way to the Emacs repo.

lisp/org-compat.el

@@ -46,6 +46,7 @@
 (declare-function org-align-tags "org" (&optional all))
 (declare-function org-at-heading-p "org" (&optional ignored))
 (declare-function org-at-table.el-p "org" ())
+(declare-function org-back-to-heading "org" (&optional invisible-ok))
 (declare-function org-element-at-point "org-element" (&optional pom cached-only))
 (declare-function org-element-at-point-no-context "org-element" (&optional pom))
 (declare-function org-element-context "org-element" (&optional element))
@@ -60,6 +61,7 @@
 (declare-function org-link-set-parameters "ol" (type &rest rest))
 (declare-function org-log-into-drawer "org" ())
 (declare-function org-make-tag-string "org" (tags))
+(declare-function org-next-visible-heading "org" (arg))
 (declare-function org-reduced-level "org" (l))
 (declare-function org-return "org" (&optional indent arg interactive))
 (declare-function org-fold-show-context "org-fold" (&optional key))
@@ -67,8 +69,13 @@
 (declare-function outline-next-heading "outline" ())
 (declare-function speedbar-line-directory "speedbar" (&optional depth))
 (declare-function table--at-cell-p "table" (position &optional object at-column))
+(declare-function org-fold-folded-p "org-fold" (&optional pos spec-or-alias))
+(declare-function org-fold-hide-sublevels "org-fold" (levels))
+(declare-function org-fold-hide-subtree "org-fold" ())
 (declare-function org-fold-region "org-fold" (from to flag &optional spec))
 (declare-function org-fold-show-all "org-fold" (&optional types))
+(declare-function org-fold-show-children "org-fold" (&optional level))
+(declare-function org-fold-show-entry "org-fold" (&optional hide-drawers))
 
 (defvar calendar-mode-map)
 (defvar org-complex-heading-regexp)

lisp/org-macs.el

@@ -87,6 +87,7 @@ Version mismatch is commonly encountered in the following situations:
 
 (declare-function org-mode "org" ())
 (declare-function org-agenda-files "org" (&optional unrestricted archives))
+(declare-function org-time-string-to-seconds "org" (s))
 (declare-function org-fold-show-context "org-fold" (&optional key))
 (declare-function org-fold-save-outline-visibility "org-fold" (use-markers &rest body))
 (declare-function org-fold-next-visibility-change "org-fold" (&optional pos limit ignore-hidden-p previous-p))