2016-08-29 2.0:
- support various output format
- add output format "nagios_strict"
- add output format "debug"
- add output format "binary"
- add output format "human"
- force UTF8 encoding
- do not connect ot the cluster if using --dbinclude for service pg_dump_backup
- add argument --dump-status-file, useful for debugging
- add service "table_unlogged"
- add basic support to timeline cross in service archive_folder
- add service "settings"
- add service "invalid_indexes"
- fix a bug where pod2usage couldn't find the original script
- fix wal size computation for 9.3+ (255 -vs- 256 seg of 16MB)
- fix perl warning with pg_dump_backup related to unknown database
- fix buffers_backend unit in check_bgwriter