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

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

Remove netatm from HEAD as it is not MPSAFE and relies on the now removed
NET_NEEDS_GIANT. netatm has been disconnected from the build for ten
months in HEAD/RELENG_7. Specifics:

- netatm include files
- netatm command line management tools
- libatm
- ATM parts in rescue and sysinstall
- sample configuration files and documents
- kernel support as a module or in NOTES
- netgraph wrapper nodes for netatm
- ctags data for netatm.
- netatm-specific device drivers.

MFC after: 3 weeks
Reviewed by: bz
Discussed with: bms, bz, harti

Disconnect netatm from the build as it is not MPSAFE and relies on
NET_NEEDS_GIANT, which will shortly be removed. This is done in a
away that it may be easily reattached to the build before 7.1 if
appropriate locking is added. Specifics:

- Don't install netatm include files
- Disconnect netatm command line management tools
- Don't build libatm
- Don't include ATM parts in rescue or sysinstall
- Don't install sample configuration files and documents
- Don't build kernel support as a module or in NOTES
- Don't build netgraph wrapper nodes for netatm

This removes the last remaining consumer of NET_NEEDS_GIANT.

Reviewed by: harti
Discussed with: bz, bms
Approved by: re (kensmith)

Restore vendor ID's.

Requested by: bde

Add a program for configuration of the ATM drivers and the IP over ATM
stuff. This utility allows inspection of the ATM characteristics,
the PHY layer, including statistics of both, the retrival of the
list of currently open channels and also allows access to utopia(4).

style.Makefile(5)'ize

$Id$ -> $FreeBSD$

Add new files for HARP3

Host ATM Research Platform (HARP), Network Computing Services, Inc.
This software was developed with the support of the Defense Advanced
Research Projects Agency (DARPA).