Change 'type' declaration to 'ftype'

Change 'type' declaration to 'ftype'

* lisp/window.el (get-lru-window, get-largest-window)
(one-window-p): Update function type declaration.
* lisp/subr.el (ignore, error, zerop, fixnump, bignump, lsh)
(last, eventp, mouse-movement-p, log10, memory-limit)
(internal-pop-keymap): Likewise.
* lisp/simple.el (count-lines, mark, string-empty-p): Likewise.
* lisp/files.el (parse-colon-path): Likewise.
* lisp/env.el (getenv): Likewise.
* lisp/emacs-lisp/regexp-opt.el (regexp-opt): Likewise.
* lisp/emacs-lisp/lisp.el (buffer-end): Likewise.
* lisp/emacs-lisp/comp.el (comp--final): Likewise.
* lisp/custom.el (custom-variable-p): Likewise.
* lisp/emacs-lisp/byte-run.el (defun-declarations-alist): Rename 'type'
-> 'ftype'.

(cherry picked from commit 6e1bb713f61da3e09b811883ed889067a1cc939b)