[fpc-pascal] const records passed incorrectly

[Marco van de Voort]

In our previous episode, Jürgen Hestermann said:
> > In 
> > general we try to be Delphi compatible as much as time and
> > backward compatibility permits.
> 
> I hate it if bugs or illogical things are copied from Delphi. It may be
> the case that Delphi vanishes one day. Then we still would have all these
> bugs in FPC/Lazarus cast in stone forever. I think we should not slavish
> copy whatever Delphi does. Even if migration is a bit more work, the
> result of a cleaner and more logical code justifies it.

I don't agree in general. It makes sharing code (not migration) very hard.

However in this case, there is much less installed base on Delphi, since
most dlls simply use stdcall