bug#13276: 24.2.50; apropos-variable

[Drew Adams]

> > I suggest renaming `apropos-variable' to `apropos-option' and to
> > use `apropos-variable' for 
> 
> That sounds right.

Kevin Rodgers (and I) suggested the same thing, at least as far back as 2005.

http://lists.gnu.org/archive/html/bug-gnu-emacs/2005-09/msg00042.html

http://lists.gnu.org/archive/html/emacs-devel/2007-10/msg01165.html

(In the latter thread I also proposed the same thing for `set-variable':
renaming it to `set-option'.)

And at least as far back as 2007 I noted that RMS had agreed to such a renaming
"but not now".  I don't find that qualification now, but here he agreed to a
renaming (aliasing):

http://lists.gnu.org/archive/html/emacs-devel/2007-10/msg01273.html