bug#1381: 23.0.60; capitalization of car and cdr in the doc

[Drew Adams]

>     They are not in uppercase, they are in "small caps" 
>     typeface (@sc in
>     Texinfo markup).  You are reading the Info manual, where @sc is
>     rendered as uppercase, but in the printed manual it looks 
>     differently.
> 
> It may be a mistake to render @sc as upper case in Info
> because these words might get confused with variable names.
> (I don't know if that is a real problem.)

OK, that's one thing. But my question was whether these shouldn't simply be
treated as normal Emacs terms - just like cons, buffer, symbol, and frame, after
they have been introduced (defined).