addr_resolve() rewrite broke { (ipv6enabled == true) name => IPv4 address }

network.c:
- addr_resolve(): save AF_UNSPEC ip4 address into ip4, not into to->ip4
ip_equal(): handle embedded v4 vs. native v4 as equal

network.c:
- ip_equal(): on IPv4 vs. IPv6, check if the IPv6 is an embedded IPv4 and if true, compare that
Merge remote-tracking branch 'upstream/master' into Integration
Merge pull request #579 from FullName/Integration

IPv6: post-integration fixes