bug#33440: 26.1; grouping `forms' in info:elisp#Index

[Eli Zaretskii]

> From: Van L <van@scratch.space>
> Date: Thu, 22 Nov 2018 23:31:02 +1100
> Cc: 33440@debbugs.gnu.org
> 
> > I'm not sure I understand the request.  Are you asking for index
> > entries like "forms, self-evaluating", "forms, symbol", "forms, list",
> > etc.?
> 
> I don’t know the forms there, a sampling is the following:
> 
> * form:                                  Intro Eval.          (line  12)
> * special form descriptions:             A Sample Function Description.
>                                                               (line   6)
> * special forms:                         Special Forms.       (line   6)
> * special forms for control structures:  Control Structures.  (line   6)
> 
> The above would be indexed together with a common prefix.

Done, thanks.