libc DNS functions will now use the new dnssocket() / dnsconnect()

libc DNS functions will now use the new dnssocket() / dnsconnect()
system calls.  These signal to the pledge kernel code that a DNS
transaction is happening.  These special sockets only work well with
port 53 (there are some cute plans...).
Programs calling pledge "inet" will not work! You need pledge "dns",

and of course, you need a fairly fresh kernel.

ok guenther kettenis tedu