Fix some no-X build warnings

* lisp/cus-edit.el (fringe-bitmap-p): Autoload.

* lisp/image.el (clear-image-cache): Declare.

* lisp/mouse.el (dnd-begin-file-dram): Autoload.

* lisp/thumbs.el (image-supported-file-p): Declare (bug#57342).

* lisp/mail/rmailmm.el (rmail-mime-set-bulk-data):
* lisp/emacs-lisp/icons.el (icons--create): Avoid warnings on no-X
builds.

lisp/cus-edit.el

@@ -4291,6 +4291,9 @@ restoring it to the state of a face that has never been customized."
 (defvar widget-fringe-bitmap-prompt-value-history nil
   "History of input to `widget-fringe-bitmap-prompt-value'.")
 
+;; In no-X builds, fringe.el isn't preloaded.
+(autoload 'fringe-bitmap-p "fringe")
+
 (define-widget 'fringe-bitmap 'symbol
   "A Lisp fringe bitmap name."
   :format "%v"

lisp/emacs-lisp/icons.el

@@ -189,8 +189,10 @@ present if the icon is represented by an image."
 (cl-defmethod icons--create ((_type (eql 'image)) icon keywords)
   (let ((file (if (file-name-absolute-p icon)
                   icon
-                (image-search-load-path icon))))
+                (and (fboundp 'image-search-load-path)
+                     (image-search-load-path icon)))))
     (and (display-images-p)
+         (fboundp 'image-supported-file-p)
          (image-supported-file-p file)
          (propertize
           " " 'display

lisp/image.el

@@ -32,6 +32,8 @@
   :group 'multimedia)
 
 (declare-function image-flush "image.c" (spec &optional frame))
+(declare-function clear-image-cache "image.c"
+                  (&optional filter animation-cache))
 
 (defconst image-type-header-regexps
   `(("\\`/[\t\n\r ]*\\*.*XPM.\\*/" . xpm)

lisp/mail/rmailmm.el

@@ -796,8 +796,9 @@ directly."
      ((string-match "text/" content-type)
       (setq type 'text))
      ((string-match "image/\\(.*\\)" content-type)
-      (setq type (image-supported-file-p
-		  (concat "." (match-string 1 content-type))))
+      (setq type (and (fboundp 'image-supported-file-p)
+                      (image-supported-file-p
+		       (concat "." (match-string 1 content-type)))))
       (when (and type
                  rmail-mime-show-images
 	         (not (eq rmail-mime-show-images 'button))

lisp/mouse.el

@@ -869,6 +869,9 @@ must be one of the symbols `header', `mode', or `vertical'."
 	       map)
 	     t (lambda () (setq track-mouse old-track-mouse)))))))
 
+;; In no-X builds, dnd.el isn't preloaded.
+(autoload 'dnd-begin-file-drag "dnd")
+
 (defun mouse-drag-mode-line (start-event)
   "Change the height of a window by dragging on its mode line.
 START-EVENT is the starting mouse event of the drag action.

lisp/org/org-plot.el

@@ -621,7 +621,8 @@ manner suitable for prepending to a user-specified script."
   "Find any overlays for IMG-FILE in the current Org buffer, and refresh them."
   (dolist (img-overlay org-inline-image-overlays)
     (when (string= img-file (plist-get (cdr (overlay-get img-overlay 'display)) :file))
-      (when (file-exists-p img-file)
+      (when (and (file-exists-p img-file)
+                 (fboundp 'image-flush))
         (image-flush (overlay-get img-overlay 'display))))))
 
 ;;-----------------------------------------------------------------------------

lisp/thumbs.el

@@ -294,6 +294,7 @@ smaller according to whether INCREMENT is 1 or -1."
     tn))
 
 (declare-function image-size "image.c" (spec &optional pixels frame))
+(declare-function image-supported-file-p "image" (file))
 
 (defun thumbs-file-size (img)
   (let ((i (image-size