Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

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

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Node constructor methods are supposed to be called in syscall
context always. Convert nodes to consistently use M_WAITOK flag
for memory allocation.

Reviewed by: julian

Retire the MALLOC and FREE macros. They are an abomination unto style(9).

MFC after: 3 months

/* -> /*- for license, minor formatting changes

Switch to using C99 sparse initialisers for the type methods array.
Should make no binary difference.

Submitted by: Gleb Smirnoff <glebius@cell.sick.ru>
Reviewed by: Harti Brandt <harti@freebsd.org>
MFC after: 1 week

Add a netgraph node to handle ATM LLC encapsulation. This currently handles
ethernet (tested) and FDDI (not tested). The main use for this is on ADSL (or
other ATM) connections where bridged ethernet is used, PPPoE being a prime
example.

There is no manual page as yet, I will write one shortly.

Reviewed by: harti