bug#25340: Save-some-buffers gets called when installing packages.

[npostavs]

Nikolay Kudryavtsev <nikolay.kudryavtsev@gmail.com> writes:

> Ok, fixed.

> +If fourth argument LIMIT-BUFFER-SAVING is t only buffers within
                                             ^^^ 
> +DIRECTORY are checked for modification."

I think there should be a comma there, do you agree?  Also, we should
say non-nil instead of t.

>
> P. S. Don't really like the name limit-buffer-saving, but can't think
> of a better one.

Maybe save-only-in-directory-p (that's even longer though).