[fpc-pascal] const records passed incorrectly

[Jürgen Hestermann]

> 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.