ndppd: initial import (release 0.2.1)

Hi,

here is a patch to add a package for ndppd:

    ndppd, or NDP Proxy Daemon, is a daemon that proxies NDP (Neighbor Discovery
    Protocol) messages between interfaces.  ndppd currently only supports
    Neighbor Solicitation Messages and Neighbor Advertisement Messages.

    The ndp_proxy provided by Linux doesn't support listing proxies, and only
    hosts are supported.  No subnets.  ndppd solves this by listening for
    Neighbor Solicitation messages on an interface, then query the internal
    interfaces for that target IP before finally sending a Neighbor
    Advertisement message.
    http://www.priv.nu/projects/ndppd/

I tested it and it works fine.  I am willing to maintain it.

Note that this my first C++ package and it took a lot of trial and error to get
the Build/Compile target working.  Any feedback would be much welcome.

Best regard,

>From 689b4a52af2e25e3574d0dca7cc5e63ed100c50a Mon Sep 17 00:00:00 2001
From: Gabriel Kerneis <kerneis@pps.jussieu.fr>
Date: Fri, 27 Jan 2012 15:35:14 +0100
Subject: [PATCH] [packages] ndppd: initial import (release 0.2.1)

git-svn-id: svn://svn.openwrt.org/openwrt/packages/ipv6/ndppd@29987 3c298f89-4303-0410-b956-a3cf2f4a3e73
[packages] Mass Fix for GCC 4.6

nodefaultlibs now includes libc so we have to add it where we want it

git-svn-id: svn://svn.openwrt.org/openwrt/packages/ipv6/ndppd@30530 3c298f89-4303-0410-b956-a3cf2f4a3e73
[packages] more gcc 4.6 compilation fixes

git-svn-id: svn://svn.openwrt.org/openwrt/packages/ipv6/ndppd@30548 3c298f89-4303-0410-b956-a3cf2f4a3e73
ndppd: new upstream release 0.2.2

New features in 0.2.2:
    - libconfuse dependency removed
    - Improved logging
    - New auto-configuration option

Signed-off-by: Gabriel Kerneis <kerneis@pps.jussieu.fr>

git-svn-id: svn://svn.openwrt.org/openwrt/packages/ipv6/ndppd@30580 3c298f89-4303-0410-b956-a3cf2f4a3e73
[packages] ndppd libc++ fix

git-svn-id: svn://svn.openwrt.org/openwrt/packages/ipv6/ndppd@32985 3c298f89-4303-0410-b956-a3cf2f4a3e73
packages: fold the IPv6 menu into Network

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/packages/ipv6/ndppd@36635 3c298f89-4303-0410-b956-a3cf2f4a3e73
Move files to ndppd folder for import in openwrt-routing feed
ndppd: importing ndppd package in openwrt-routing feed