should we merge ipv6 support into rsync?

[Martin Pool]

I have merged the KAME.net IPv6 patch onto the track-kameipv6 branch.
It compiles and seems to work but is not yet updated to fit into HEAD
(i.e. 2.4.7pre).

There are some issues that need to be addressed: in particular I think
the patch makes more assumptions about having a modern sockets
interface than we can get away with on all our systems.

Still, there it is.  Try it and see if you like it.

--
Martin