Replace callbacks by their real names
Replace callbacks by their real names

All probes that can evaluate all OVAL objects are handled by
the same handler, so there is no need to pass the handler
name as a callback. Simiraly, the system info probe is unique,
so there is always a specific handler.

OpenSCAP/openscap,OpenSCAP/openscap,OpenSCAP/openscap,jan-cerny/openscap,mpreisler/openscap,jan-cerny/openscap,jan-cerny/openscap,redhatrises/openscap,jan-cerny/openscap,mpreisler/openscap,jan-cerny/openscap,redhatrises/openscap,jan-cerny/openscap,OpenSCAP/openscap,redhatrises/openscap,OpenSCAP/openscap,mpreisler/openscap,redhatrises/openscap,OpenSCAP/openscap,mpreisler/openscap,mpreisler/openscap,mpreisler/openscap,redhatrises/openscap,redhatrises/openscap