Davies Liu: auto restore metadata in mfsmaster
Davies Liu: fix version of changelog
Davies Liu: no changelog is ok, reduce syslog of download sessions
Davies Liu: disable timed jobs if not in MasterMode
Davies Liu: use changelog API in mastercomm
Davies Liu: kill cs connections if not in master mode
Davies Liu: add header
Davies Liu: flush changelogs to metalogger before exit
Davies Liu: bugfix
Davies Liu: bugfix: send old changelogs to metalogger
Merge branch 'red' into davies_liu
Davies Liu: use fs_ismastermode()
Merge branch 'flush' into davies_liu
Davies Liu: download metadata if replay changelog failed