4.8.x is not supported upstream any more, so better update before 6.6 is tagged if we want to benefit from upstream's security updates. To stay on the safe side, this update doesn't enable the LMDB backend which has become the default upstream. samba requires a 64 bits system to use LMDB (32 bits systems can keep on using tdb); and LMDB has always been a problem child on OpenBSD anyway. Lightly tested by me, bulk build test and ok ajacoutot@ (thanks!)