bug#10770: info-display-manual replaces existing *info* buffer

[Glenn Morris]

Eli Zaretskii wrote:

> IOW, do it like this:
>
>   M-x info-display-manual RET gnus RET
>   M-x rename-buffer *info*<1> RET
>   M-x info-display-manual RET emacs RET
>   M-x rename-buffer *info*<2> RET

Yes, I can do that. But I think it would be more useful to me if it
worked the way Juri suggested:

  Maybe it would be good to append manual names to buffer names as
  suffixes like "*info*<gnu>" and "*info*<emacs>" to make unique and
  recognizable buffer names?

Maybe require a prefix arg, or have an option, to get that behaviour if
you don't like it.

Anyway, just a feature request, not a bug report.