Revert previous set of changes

Seems that nscount in glibc is actually a count of all IPv4 and IPv6 addresses. Debian changes this to only IPv4 addresses in submitted-resolv-ipv6-nameservers.diff[1]. Please revert these changes as I'll try take them to Debian.

I apologise for wasting yours and Antonio's time.

[1] https://lists.debian.org/debian-glibc/2014/06/msg00138.html