* keymap.c (map_keymap_internal): Use format_save_value.

* keymap.c (map_keymap_internal): Use format_save_value.
(map_keymap_char_table_item): Adjust accordingly.
* fileio.c (non_regular_fd, non_regular_inserted)
(non_regular_nbytes): Remove.
(Finsert_file_contents): Convert trytry to ptrdiff_t.  Use
format_save_value to pass parameters to read_non_regular.
(read_non_regular): Use XSAVE_ macros to extract parameters.
Adjust comment.
* xmenu.c (xmenu_show) [!USE_X_TOOLKIT && !USE_GTK]: Use
format_save_value.
(pop_down_menu) [!USE_X_TOOLKIT && !USE_GTK]: Adjust user.