Description of problem:
The migrate-xscreensaver-config.sh file is missing from gnome-screensaver rpm,
and there's no way currently to use any xscreensaver screensavers with
gnome-screensaver while later comes with only a few simple screensavers.
Either the respective .desktop files should be included into xscreensaver rpms,
or alternatively the migrate-xscreensaver-config.sh script should be invoked in
the postinstall stage of xscreensaver rpms.
Version-Release number of selected component (if applicable):
there is a separate package you need to install now: