In order to synchronise neo with slapos, it has to work perfectly with ipv4
and ipv6. This allows to integrate neo in erp5 and to prepare different buildout
installations of neo.
The protocol and connectors are no more generic but can now support IPv4 and
IPv6 connections. We adopted a specific way of development which allow to
easily add new protocols in the future.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@2654 71dcc9de-d417-0410-9af5-da40c76e7ee4