[incompat,new_func,->RELENG_1_2] add disconnect_all_by_name() and disconnect_by_portname_connector_name(), disconnect_by_portname_connector_id(). refs #3400
[incompat,new_func,->RELENG_1_2] add disconnect_all_by_name() and disconnect_by_portname_connector_name(), disconnect_by_portname_connector_id(). refs #3400