[fpc-pascal] How to detect if my program is running with root/elevated privileges?

[Marco van de Voort]

In our previous episode, Bart said:
> 
> I thought of trying to write to a "protected" location (/etc/something
> on linux, C:\ProgramData\something on Windows), but the problem is
> that Windows virtualizes these calls (it'll end up somewhere lse,
> where your program will never find it again), so writing will succeed
> even if user has no administrator rights.

For windows there is winutils.iswindowsadmin(), for unix likes there is
fpgeteuid (which should return zero for root).