Always resolve localhost to loopback address
This implements this draft rfc[1] which recommends clients always resolve "localhost" to a loopback address which has security benefits such as preventing a malicious dns server to redirect local connections.
This also kinda makes g_network_address_new_loopback()
a redundant API but thats fine.
[1] https://tools.ietf.org/html/draft-west-let-localhost-be-localhost-06
cc @mcatanzaro
Edited by Patrick Griffis