bug#17947: 24.3; ruby-mode sets require-final-newline unconditionally

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Date: Sat, 05 Jul 2014 14:38:45 -0400
> Cc: 17947-done@debbugs.gnu.org
> 
> > One user reported that ruby-mode triggers this warning. Sure enough, in
> > ruby-mode.el at line 287, I see:
> >   (set (make-local-variable 'require-final-newline) t)
> 
> Removed in the `emacs-24' branch.

Regardless of what this or that mode does, I think it's wrong for
ethan-wspace to annoy users for having require-final-newline set
non-nil.