"isolov submitted rdb with tag master for tdaq-99-00-00"

=== rdb ===

improve error reporting in case of schema reload as discussed in ADTCC-339 (Igor Soloviev) style and code layout changes (Igor Soloviev) move rdb_subscriber cmdline -> boost::program_options (Igor Soloviev) add release notes (Igor Soloviev) do not try backup on reload, if backup is disabled (Igor Soloviev)