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

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

Drop <bsd.man.mk> support from <bsd.kmod.mk>.

Not objected to by: -current

Use a consistent style and one much closer to the rest of /usr/src

When manual pages are moved or removed, MANX should be changed
to NOMAN.

Reported by: bde

Move the netgraph-related manual pages into share/man/man4/, as
discussed with archie.

Use .include <bsd.kmod.mk> to get to ../../*/conf/kmod.mk instead of
encoding the relative path.

Move netgraph node type man pages from section 8 to section 4.

Pull in sys/conf/kmod.mk, rather than /usr/share/mk/bsd.kmod.mk.
This means that the kernel can be totally self contained now and is not
dependent on the last buildworld to update /usr/share/mk. This might
also make it easier to build 5.x kernels on 4.0 boxes etc, assuming
gensetdefs and config(8) are updated.

Zap KMODDEPS line

Fix typos per PR 15649. Also did some rewording for clarity.

PR: docs/15649
Submitted by: Kazuo Horikawa <horikawa@jp.FreeBSD.org>

Manual page style work.
Submitted by: Alexey Zelkin <phantom@FreeBSD.org>
thanks!

Include net/slcompress.c in the build of this module.

Update to reflect changes in the node type.

Stop nroff from complaining about the freeBSD version..
Also some updates to the vjc node man page.

Fix some spelling errors.

Now that Netgraph is in the system there are some cleanups we can do.
Also save a slightly closer to completion version of the PPPOE code.

Submitted by: Archie Cobbs <archie@freebsd.org>

Whistle's Netgraph link-layer (sometimes more) networking infrastructure.
Been in production for 3 years now. Gives Instant Frame relay to if_sr
and if_ar drivers, and PPPOE support soon. See:
ftp://ftp.whistle.com/pub/archie/netgraph/index.html
for on-line manual pages.

Reviewed by: Doug Rabson (dfr@freebsd.org)
Obtained from: Whistle CVS tree