[ada] Revert stamp-xgnatug related make-lang.in change

[Daniel Berlin]

On Jan 5, 2004, at 5:40 PM, Richard Kenner wrote:

>     Please document this convention in codingconventions.html, I expect
>     someone else will probably then deal with converting all FIXMEs to 
> ???.
>
> I didn't invent it: it's been that way since forever.  If there are
> any FIXMEs in GCC, they're pretty new.
>

There are 109 FIXME's in gcc regular dir (IE excluding config/*) alone.
I seriously doubt they are *all* new.

Anyway, most editors i've got highlight FIXME and XXX and TODO, but not 
???
I've never seen ??? used as a FIXME syntax.
Maybe i'm just too young.
--Dan