D7401: Solid/Mac : fleshing out the skeleton IOKit backend (WIP)

[René J.V. Bertin]

>> +class IOKitOpticalDrive : public IOKitStorage, virtual public Solid::Ifaces::OpticalDrive
>> +{
>
>I see that all classes have a virtual inheritance but i don't see they are exported.

Indeed. I'm pretty sure that got there because it was already in code I cloned (for the simple reason this isn't a construct I'm familiar with =) ).

That said, there's inheritance inside the IOKit backend so this kind of inheritance could make sense even without exporting publicly.