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Change the sleep time(the time between sending shutdown command to other processes and reap these processes) of boss process from 0.5 to 1 second, so that it can make sure other processes can exit automatically when user enter ctrl+c command.
git-svn-id: svn://bind10.isc.org/svn/bind10/branches/trac335@3050 e5f2f494-b856-4b98-b285-d166d9295462