Updated copyright notices to include the year 2018.
doveadm service status: Add doveadm_stop field This indicates whether "doveadm service stop" was used for the service.
Updated copyright notices to include the year 2017.
master: PROCESS-STATUS output was duplicated many times
Added "doveadm process status" This allows asking for processes' current status in master process.
Added "doveadm service status" This allows asking for services' current status in master process.
master: Allow stopping specific services via master socket.