Make some defcustom types more restrictive

Make some defcustom types more restrictive

* lisp/abbrev.el (abbrev-suggest-hint-threshold):
* lisp/bookmark.el (bookmark-bmenu-file-column)
(bookmark-menu-length):
* lisp/buff-menu.el (Buffer-menu-size-width)
(Buffer-menu-mode-width):
* lisp/calendar/calendar.el (calendar-week-start-day)
(calendar-intermonth-spacing, calendar-column-width)
(calendar-day-digit-width):
* lisp/calc/calc.el (calc-undo-length):
* lisp/calendar/timeclock.el (timeclock-workday):
* lisp/comint.el (comint-buffer-maximum-size)
(comint-input-ring-size):
* lisp/doc-view.el (doc-view-resolution, doc-view-image-width):
* lisp/emacs-lisp/bytecomp.el (byte-compile-docstring-max-column):
* lisp/emacs-lisp/comp.el (native-comp-debug)
(native-comp-verbose, native-comp-async-jobs-number):
* lisp/emacs-lisp/package.el (package-name-column-width)
(package-version-column-width, package-status-column-width)
(package-archive-column-width):
* lisp/eshell/esh-mode.el (eshell-buffer-maximum-lines):
* lisp/frame.el (blink-cursor-blinks):
* lisp/info.el (Info-breadcrumbs-depth):
* lisp/jit-lock.el (jit-lock-chunk-size):
* lisp/kmacro.el (kmacro-ring-max):
* lisp/menu-bar.el (yank-menu-length, yank-menu-max-items):
* lisp/midnight.el (clean-buffer-list-delay-general)
(clean-buffer-list-delay-special):
* lisp/net/dictionary.el (dictionary-port)
(dictionary-proxy-port):
* lisp/net/ldap.el (ldap-default-port):
* lisp/net/pop3.el (pop3-port, pop3-stream-length):
* lisp/net/rcirc.el (rcirc-default-port):
* lisp/net/sieve-manage.el (sieve-manage-default-port):
* lisp/play/spook.el (spook-phrase-default-count):
* lisp/play/tetris.el (tetris-buffer-width)
(tetris-buffer-height, tetris-width, tetris-height)
(tetris-top-left-x, tetris-top-left-y):
* lisp/profiler.el (profiler-sampling-interval):
* lisp/progmodes/sql.el (sql-port):
* lisp/recentf.el (recentf-max-menu-items):
* lisp/strokes.el (strokes-grid-resolution):
* lisp/tab-bar.el (tab-bar-tab-name-truncated-max):
* lisp/term/xterm.el (xterm-max-cut-length):
* lisp/time.el (display-time-interval, world-clock-timer-second):
* lisp/url/url-cache.el (url-cache-expire-time):
* lisp/url/url-cookie.el (url-cookie-save-interval):
* lisp/url/url-history.el (url-history-save-interval):
* lisp/url/url-queue.el (url-queue-parallel-processes)
(url-queue-timeout):
* lisp/url/url-vars.el (url-max-password-attempts)
(url-max-redirections):
* lisp/vc/emerge.el (emerge-min-visible-lines):
* lisp/vc/vc.el (vc-log-show-limit):
* lisp/window.el (window-min-height, window-min-width):
* lisp/winner.el (winner-ring-size): Use :type natnum.

* lisp/savehist.el (savehist-file-modes): Fix setting to nil value and
use :type natnum.