dirmngr: Honor ports specified in SRV records.
* dirmngr/ks-engine-hkp.c (struct hostinfo_s): New field 'port'. (create_new_hostinfo): Initialize 'port'. (add_host): Add host parameter and update the hosttable entry. (map_host): Return port if known, adjust calls to 'add_host'. (make_host_part): Let 'map_host' specify the port if known.
- Signed-off-by: Justus Winter <justus@g10code.com>