* lisp/saveplace.el (save-place-to-alist): Add `dired-filename' as

* lisp/saveplace.el (save-place-to-alist): Add `dired-filename' as
a position when `dired-directory' is non-nil.  Check integer
positions with `integerp'.
(toggle-save-place, save-places-to-alist): Add check for
`dired-directory'.
(save-place-find-file-hook): Check integer positions with
`integerp'.
(save-place-dired-hook): Use `dired-goto-file' when
`dired-filename' is found in the assoc list.  Check integer
positions with `integerp'.
(dired-initial-position-hook): Rename from `dired-initial-point-hook'.

* lisp/dired.el (dired-initial-position-hook): Rename back from
`dired-initial-point-hook'.
(dired-initial-position): Rename `dired-initial-point-hook' to
`dired-initial-position-hook'.
(dired-file-name-at-point): Doc fix.

Fixes: debbugs:15329