Very "hot" PostgreSQL

From now on PostgreSQL no longer requires reboot on all available operations.
Additionally:
— Bugfix: ``smdba backup-hot --enable=off`` then ``--backup-dir`` was still asked.
— Improve: Better messages on what is going on
— Improve: Updated man page.
pg-reload-conf: Where does this come from? Is this a new file which you forget to commit?