bug#9528: 24.0.50; Info navigation

[Juri Linkov]

> I noticed several malfunctions in info navigation commands.
>
> The following recipes start from "emacs -Q":
>
> ------------------------------------------------
> 1. Eval: (info "(elisp)Macros")
> 2. Type: <DEL>
>  --> Go to node "(elisp)Related Topics" (OK).
> 3. Type: l
>  --> (Expected) Go to the last-visited info node (i.e., "(elisp)Macros").
>  --> (Observed) Go to node "(elisp)Functions".

Fixed the same way as bug#208.

> ------------------------------------------------
> 1. Eval: (info "(elisp)Macros")
> 2. Move point to line 21 (* Menu:).
> 3. Type: <DEL>
>  --> (Expected) Go to node "(elisp)Related Topics".
>  --> (Observed) Go to node "(elisp)Process Internals".

Fixed this bug as well.

> ------------------------------------------------
> 1. Eval: (info "(elisp)Macros")
> 2. Move point to line 22 (* Simple Macro).
> 3. Type: <DEL>
>  --> (Expected) Go to node "(elisp)Related Topics".
>  --> (Observed) Go to node "(elisp)Simple Macro".

Sorry, I can't change this because this behavior is explicitly
implemented in Info, so it's not a bug.

> ------------------------------------------------
>
> Note: The behavior I expect is based on what I've read in info-mode
> help (C-h i ?).