bug#38401: 27.0.50; Ability to move list elements in *customize* wanted

[Marco Wahl <marcowahlsoft@gmail.com>]

Hi!

The customize interface should provide a way to move items of a list
AFAICT.  Being able to move items up and down would be natural and nice,
I think.  At least I would appreciate that.


Thanks

In GNU Emacs 27.0.50 (build 5, x86_64-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2019-11-13 built on lel
Repository revision: 0a492e4dfa188f32fd04cdf95c9fa6324facae08
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12006000
System Description: Arch Linux

Recent messages:
custom-toggle-hide-variable: There are unsaved changes
Custom-newline: You can’t edit this part of the Custom buffer

Configured using:
 'configure --with-x-toolkit=lucid'

Configured features:
XAW3D XPM JPEG TIFF GIF PNG RSVG SOUND GPM DBUS GSETTINGS GLIB NOTIFY
INOTIFY ACL GNUTLS LIBXML2 FREETYPE HARFBUZZ M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS LUCID X11 XDBE XIM MODULES THREADS LIBSYSTEMD JSON
PDUMPER LCMS2 GMP

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Custom

Minor modes in effect:
  global-magit-file-mode: t
  magit-auto-revert-mode: t
  global-git-commit-mode: t
  async-bytecomp-package-mode: t
  pdf-occur-global-minor-mode: t
  memento-mori-mode: t
  shell-dirtrack-mode: t
  winner-mode: t
  timeclock-mode-line-display: t
  show-paren-mode: t
  nyan-mode: t
  global-undo-tree-mode: t
  undo-tree-mode: t
  display-time-mode: t
  counsel-mode: t
  beginend-global-mode: t
  auto-insert-mode: t
  lisp-butt-global-mode: t
  global-company-mode: t
  company-mode: t
  wrap-region-global-mode: t
  wrap-region-mode: t
  ido-hacks-mode: t
  ido-everywhere: t
  org-pretty-tags-global-mode: t
  encourage-mode: t
  straight-use-package-mode: t
  straight-package-neutering-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  global-prettify-symbols-mode: t
  file-name-shadow-mode: t
  jit-lock-debug-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t