System Modules

[Remi Forax]

I do not like the current definition of what a system module is, i.e. the modules returned by ModuleFinder.ofSystem().
Maybe i'm wrong but it's all modules available through jrt, so if one uses an image created by jlink, the application modules are considered as system modules (because there are also loaded by jrt) which seems wrong to me.

I think we should de-couple the notion of being in the jrt image and being a system module.

regards,
Rémi