[fpc-pascal] Division by Zero - not raised exception

[Sasa Zeman]

> > FPC 2.0.2 do not rasie exception on integer/floats division by Zero,
which
> > is suitable for calucaltion I currently developing. Instead, division
> > return infinity:
> >
> > writeln(1/0) -> +inf
> > writeln(1.0/0) -> +inf
> Already fixed.

Unfortunatelly, bug still persists when division is performed with
constants.
Please take a look bug report #5018 for details.