isc_time_add() and isc_time_subtract() now return isc_result_t.
isc_time_add() and isc_time_subtract() now return isc_result_t.

pecharmin/bind9,pecharmin/bind9,pecharmin/bind9,pecharmin/bind9,each/bind9-collab,each/bind9-collab,each/bind9-collab,each/bind9-collab,pecharmin/bind9,pecharmin/bind9,each/bind9-collab,each/bind9-collab