[hibernate-dev] HHH-8076 - CDI-capable entity listeners

[Steve Ebersole]

As part of the work on HHH-8076 for ORM 5.1 I am going to have to change
up, in some fashion, some or all of the following internal/spi contracts :

* org.hibernate.jpa.event.spi.jpa.Callback
* org.hibernate.jpa.event.spi.jpa.CallbackRegistry
* org.hibernate.jpa.event.spi.jpa.ListenerFactory
* org.hibernate.jpa.event.internal.jpa.CallbackProcessor

I need to know whether any integrations either use any of these or provide
custom impls for any of them.