sunos: fix uv_udp_set_ttl and uv_udp_set_multicast_loop
sunos: fix uv_udp_set_ttl and uv_udp_set_multicast_loop

It turns out that setsockopt(IP_TTL) *does* expect an int, whereas
setsockopt(IP_MULTICAST_LOOP) needs a char.

urbit/archaeology2,unknownbrackets/maxcso,urbit/archaeology2,unknownbrackets/maxcso,urbit/archaeology2,unknownbrackets/maxcso,urbit/archaeology2,urbit/archaeology2,unknownbrackets/maxcso,unknownbrackets/maxcso,urbit/archaeology2,urbit/archaeology2,urbit/archaeology2,unknownbrackets/maxcso,urbit/archaeology2,unknownbrackets/maxcso