don't use separate memory contexts for res buckets without threads Download because it doesn't have any benefit and requires more memory. (RT #17898)
don't use separate memory contexts for res buckets without threads
Download because it doesn't have any benefit and requires more memory.
(RT #17898)

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