the bind10 daemon

'setstats' is a command duplicate for sending statistics and it was useless
since boss already has same command 'getstats'. Besides, 'getstats' command get
changed. It chacks validity of statistics data before returing. The second
parameter of the 'getstats' is more simpler. The keys of 'owner' and 'data'
needs to be specified.  Statistics data are directly specifed. If such
obsoleted name is specified, the stats module might discard sent data.