bug#21650: fix should be underneath MH-E

[Katsumi Yamaoka]

On Fri, 05 Feb 2016 15:04:14 +0900, Katsumi Yamaoka wrote:
> (defcustom mm-html-inhibit-images t
>   "Non-nil means inhibit displaying of images inline in the article body."

Sorry, please let me make it supersede with:

(defcustom mm-html-inhibit-images t
  "Non-nil means inhibit displaying of images inline in the article body."
  :version "25.1"
  :type 'boolean
  :group 'mime-display
  :set (lambda (symbol value)
         (custom-set-default
          symbol
          (cond ((boundp 'mm-html-inhibit-images) value)
                ((boundp 'mm-inline-text-html-with-images)
                 (not (symbol-value 'mm-inline-text-html-with-images)))
                (t value)))))

This `:set' trick won't do the trick if this option is loaded
before a user sets the obsolete `mm-inline-text-html-with-images',
though.