[fpc-pascal] Plans to support various ISO modes

[Marco van de Voort]

In our previous episode, Sven Barth via fpc-pascal said:

FPC ISO modes are primarily geared to recompiling complaint code, not to
reject standards corner cases. 

> 5. Doesn't implement conformant arrays
> 
> It might be that these are supported in trunk as well, but I'm not sure.

(Afaik conformant arrays are an optional part of standard pascal) 

> Trunk supports Standard Pascal good enough that the P5 code can be compiled
> without changes. And yes, the end goal is to have full support for both
> standards (especially for ExtPas, which is still in its infancy, patches
> are welcome).

Another problem that I can remember with iso mode is that there was some
problem with passing fields that are in a variant records node to VAR
parameters and while probably nonstandard, some versions of P4 relied on
taking the ORD() of a pointer for pointermath.