Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

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

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

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

Remove options MK_LIBKSE and DEFAULT_THREAD_LIB now that we no longer
build libkse. This should fix WITHOUT_LIBTHR builds as a side effect.

Tweak the handling of "WITHOUT_LIBPTHREAD". Also remove the accidental
treatment of 'LIBKSE' as an "old style" knob.

Submitted by: ru
Approved by: re(kensmith)

Repo copy libpthreads to libkse.
This introduces the WITHOUT_LIBKSE nob,
and changes WITHOUT_LIBPTHREADS to mean with neither threading libs.
Approved by: re(kensmith)

Always install libpthread.* symlinks if at least one of
the threading libraries is built. This simplifies the
logic in makefiles that need to check if the pthreads
support is present. It also fixes a bug where we would
build a threading library that we shouldn't have built:
for example, building with WITHOUT_LIBTHR and the default
value of DEFAULT_THREADING_LIB (libthr) would mistakenly
build the libthr library, but not install it.

Approved by: re (kensmith)

The last change is not needed for HEAD.

Explained by: ru

Do not build the libedit support if NO_LIBPTHREAD is defined.

PR: bin/104478
Submitted by: Mike Durian <durian shadetreesoftware.com>

Push the detection of threading libs support down to ngctl/Makefile
as the latter can be built without threading (with the loss of line
editing functionality).

Pointed by: glebius

Fix "make checkdpadd".

Add line edit and history support to ngctl(8) via editline(3).

Details:
- The main thread runs editline(3) functions, that can block.
- A separate thread is launched to monitor netgraph sockets.
- The access to the descriptors is protected by a mutex. At
runtime the monitoring thread owns the mutex. When the main
thread reads a command from el_gets() it asks the monitoring
thread to release a mutex and sleep until the main thread
processes the command.

This makes ngctl(8) depend on libedit, and libpthread. Thus, the
new functionality isn't compiled in if release is being built
with -DRELEASE_CRUNCH.

PR: bin/87352
Reviewed by: ru, Nuno Antunes <nuno.antunes gmail.com>

Make this WARNS=3 clean.

Add a GraphViz-exporting ngctl(8) "dot" command. You can now create
very useful .dot files of your netgraph(4) to quickly visualize the
nodes, hooks and edges. An example of this can be found here:
http://people.freebsd.org/~green/sample-netgraph-dot.ps
If anyone would like to refine the output further, please do so.

Add ngctl "write" command.

MFC after: 1 week

Perform a major cleanup of the usr.sbin Makefiles.
These are not perfectly in agreement with each other style-wise, but they
are orders of orders of magnitude more consistent style-wise than before.

Remove GCC'isms in CFLAGS.

- Backout botched attempt to introduce MANSECT feature.
- MAN[1-9] -> MAN.

Set the default manual section for usr.sbin/ to 8.

Backout my previous commit, it appearantly doesn't work for asynchronous
messages.

Add -ledit to ngctl.

Somebody submitted this long time ago, and it has been sitting in my
tree for months because I thought archie would pick it up.

Submitted by: (sorry, lost track)

Experiemntal ascii based device configuration mechanism.

This may or may not survive, decision will be made well before 5.0-R

Add two new generic control messages, NGM_ASCII2BINARY and
NGM_BINARY2ASCII, which convert control messages to ASCII and back.
This allows control messages to be sent and received in ASCII form
using ngctl(8), which makes ngctl a lot more useful.

This also allows all the type-specific debugging code in libnetgraph
to go away -- instead, we just ask the node itself to do the ASCII
translation for us.

Currently, all generic control messages are supported, as well as
messages associated with the following node types: async, cisco,
ksocket, and ppp.

See /usr/share/examples/netgraph/ngctl for an example of using this.

Also give ngctl(8) the ability to print out incoming data and
control messages at any time. Eventually nghook(8) may be subsumed.

Several other misc. bug fixes.

Reviewed by: julian

Limit COPTS added by Makefile to just '-Wall'.

Remove extraneous -I compile flag that was used during testing.

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