bug#25108: 26.0.50; info node shows octal characters instead of curvy quotes

[Glenn Morris]

Eli Zaretskii wrote:

>> makeinfo version 4.8 
>
> This is really old; the current version is 6.3.  Texinfo 4.8 was the
> first one that supported @documentencoding, so I guess it had some
> bugs in that area.

Emacs's configure currently accepts makeinfo >= 4.7.
It sounds like this should be increased.
Certainly it's not clear how 4.7 could work, based on what you say about
documentencoding.