[fpc-pascal] number of cpu cores

[Florian Klaempfl]

Mattias Gaertner schrieb:
> I need a default value of the number of maximum threads.
> Is there already some RTL function that can be used for that?
> 
> For example if the program runs on a 2 x quad core it would be nice to
> get 8.
> Hyperthreading multipliers should be applied.

If we implement something like this, I propose we do it properly. There
are different numbers important:
- numa nodes
- physical cpus
- cache sharing cores
- logical/execution unit sharing cores

Which one are considered important?