* gnu/services/admin.scm (<rottlog-configuration>): Rename accessors rottlog-rottlog to rottlog-configuration-rottlog, rottlog-rc-file to rottlog-configuration-rc-file, rottlog-rotations to rottlog-configuration-rotations, rottlog-jobs to rottlog-configuration-jobs. (rottlog-etc, rottlog-jobs-or-default, rottlog-service-type): Adjust accordingly.