We are going to want to expose the NWFilter binding concept in the
public API, so the virNWFilterBindingPtr type needs to be used there.
Our internal type will shortly gain an XML representation, so rename
it to virNWFilterBindingDefPtr which follows our normal conventions.
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>