- use _NM_GET_PRIVATE() and _NM_GET_PRIVATE_PTR() everywhere.
- reorder statements, to have GObject related functions (init, dispose,
constructed) at the bottom of each file and in a consistent order w.r.t.
each other.
- unify whitespaces in signal and properties declarations.
- use NM_GOBJECT_PROPERTIES_DEFINE() and _notify()
- drop unused signal slots in class structures
- drop unused header files for device factories
First, consider all devices and not only realized and managed ones
when an empty list is passed. Also, move the list evaluation to the
checkpoint manager, since the check for device conflicts is done
there.
Fixes: 3e09aed2a0
