bug#9959: 24.0.90; `count-words' command from a narrowed buffer

[Juri Linkov]

> Try the `count-words' command from a narrowed buffer (without active region).
>
> The message displayed in the echo area is "Buffer has X lines, Y
> words, and Z characters.", where the values X, Y and Z are actually
> computed for the narrowed portion (not for the entire buffer).
>
> So, this is inaccurate.  The message should begin with something like
> "Buffer (narrowed part) has ...".

Like `C-x =' displays information about a narrowed buffer
in angle brackets `<...>', `count-words' could do the same
and display both widened and narrowed counts.