getip46() added

int getip46(int family, unsigned char *name,  struct sockaddr_storage
*sa)
family: IPv4/IPv6 preference order 4, 6, 46, 64 or 0 for getip()
compatibility.
name - hostname,
sa - destination sockaddr (must be large enougth)
returns:
0 fo failed resolution
IP address for family = 0
AF_INET/AF_INET6 overwise.