Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Correctly reassign copyright of etc/rc.d/static_ndp back to delphij@
as the project itself is no legal entity

Reported by: Joe Dahl <joel@vnode.se>
MFC after: 3 days

Add etc/rc.d/static_ndp, analogous to etc/rc.d/static_arp.
Make sure that static ARP and NDP bindings are set before NETWORKING.

As static_ndp is based on static_arp, pass copyright to the project with
permission of the original author (delphij@).

Reviewed by: delphij@FreeBSD.org
MFC after: 3 days