[fpc-pascal] for .. in loop implementation

[Marco van de Voort]

In our previous episode, leledumbo said:

> The latter one has iteration overheads, while the former can be optimized to
> loop as many as needed. I'm not saying I'm the best Pascal programmer, but
> in case there's a (better) solution to this (rather than extending the
> language) please tell me.

Your assesment is correct as far as I can see. 

However IMHO that doesn't meant you are right. One single case of an
optimalization advantage, and then in a border case like iteration over a
constant set does not justify a language extension.