bug#20322: 25.0.50; indent-tabs-mode should default to nil

[Eli Zaretskii]

> From: "John Wiegley" <jwiegley@gmail.com>
> Cc: Stefan Monnier <monnier@IRO.UMontreal.CA>, Eli Zaretskii <eliz@gnu.org>, 
> rms@gnu.org, 20322@debbugs.gnu.org
> Date: Mon, 02 Nov 2015 15:37:49 -0500
> 
> >>>>> Dmitry Gutov <dgutov@yandex.ru> writes:
> 
> > On 04/22/2015 05:59 PM, Dmitry Gutov wrote:
> >> The users who most benefit from better defaults are of course the ones we
> >> don't have yet. They won't give thanks for this, but that doesn't mean it's
> >> not valuable.
> 
> > Here's another confused user:
> > https://www.reddit.com/r/emacs/comments/3r8ec2/my_indentation_in_js2mode_is_messed_up_need_some/
> 
> I would also like to see this be `nil' by default. Eli, Stefan, Richard, do
> you see a reason not to?

We should poll the users, if we want to revert this very old default.
(I will be against ;-)