K 10 svn:author V 3 imp K 8 svn:date V 27 2015-10-28T19:11:06.579339Z K 7 svn:log V 210 BUS_ADD_CHILD calls device_add_child. device_add_child does not call BUS_ADD_CHILD. Make it explicit since it follows the command paradigm rather than the callback paradigm. Add other clarifying notes as well. END