Userspace: Implement super simple DNS resolver in userspace

You connect to this service using unix domain sockets and send the
asked domain name. It will respond with ip address or 'unavailable'

There is no DNS cache implemented so all calls ask the nameserver.

userspace/init/main.cpp

@@ -36,6 +36,12 @@ int main()
 		exit(1);
 	}
 
+	if (fork() == 0)
+	{
+		execl("/bin/resolver", "resolver", NULL);
+		exit(1);
+	}
+
 	bool first = true;
 
 	termios termios;