[gfortran] Scanner rewrite, fix for PR13702

[Eric Christopher]

> >> static void
> >>-show_locus (int offset, locus * l)
> >>+show_locus (int offset, locus * loc)
> >> {
> > 
> > 
> > I know Andy deliberately obfuscates his tree with this kind of
> > random variable name changes.  I'd prefer if we don't follow
> > that example.
> > 
> I changed that deliberately. Naming a variable l just doesn't seem to be 
> a good idea, even if it's used in only one place. Or was that a 1 there?

FWIW I agree. Names should at least be recognizable.

-eric

-- 
Eric Christopher <echristo@redhat.com>