bug#21650: fix should be underneath MH-E

[Mike Kupfer]

Mike Kupfer wrote:

> I'll try building and testing the changes next, though I'm not sure how
> far I'll get today.

Everything works as specified.  Thanks!

I had missed the fact that mm-html-inhibit-images defaults to t.  That's
not my preference, but I don't have any compelling arguments in favor of
defaulting to nil.  Will you be creating a NEWS entry for these changes?

cheers,
mike