[fpc-pascal] Docs: portability differences between Borland/FPC

[Florian Klämpfl]

Am 19.08.2018 um 14:44 schrieb Martok:
> 
>> as soon as [something changes], Delphi shows exactly the same behavior as FPC.
> 
> But that's kind of the point of this collection: sometimes the rules intersect,
> but for most cases, they don't.
Please note again: in general, there are no defined rules for FPC as soon as range check errors would occur. For FPC, 
you are just documenting random *behavior* which might change even with the next minor release.