'RELENG_4_0_0_RELEASE'.

This commit was manufactured to restore the state of the 4.0-RELEASE image.
Releases prior to 5.3-RELEASE are omitting the secure/ and crypto/ subdirs.

twice (once for the arg parsing and once to make it a normal character).
Make the man page example consistent.

Reminded by: Bryan Liesner <bleez@netaxs.com>

The entire command is ignored if the syntax is invalid...

to ``set timeout''.
This is useful for situations where your minimum call charge is (say)
5 minutes (like mine is)

0.81.1 of the i4b code - namely support of the I4B_VR_REQ
ioctl via the i4brbchX device.

Ppp controls the phone number, but idle timers and
SYNC/RAW decisions are still made by isdnd (in isdnd.rc).

This involves a new datalink state machine phase.  The
``wait for carrier'' phase happens after dialing but
before logging in.  The whole dial state should really
be abstracted so that each device type can deal with it
in its own way (thinking about PPPoE) - but that'll have
to wait.

The ``set cd'' symantics remain the same for tty devices,
but we now delay until we either get CD or timeout waiting
(at which time we drop the link if we require CD).

For i4b devices we always insist on carrier.

Thanks to hm@ for his help, and especially for pointing out
that I *don't* need to re-implement isdnd (that was a huge
waste of time !) :-]

o If we're using RADIUS and the RADIUS mtu is less than our
  peers mru/mrru, reduce our mtu to this value for NetBSD too.
o Make struct throughput's sample period dynamic and tweak the ppp
  version number to reflect the extra stuff being passed through
  the local domain socket as a result (MP mode).
o Measure the current throughput based on the number of samples actually
  taken rather than on the full sample period.
o Keep the throughput statisics persistent while being passed to
  another ppp invocation through the local domain socket.
o When showing throughput statistics after the timer has stopped, use
  the stopped time for overall calculations, not the current time.
  Also show the stopped time and how long the current throughput has
  been sampled for.
o Use time() consistently in throughput.c
o Tighten up the ``show bundle'' output.
o Introduce the ``set bandwidth'' command.
o Rewrite the ``set autoload'' command.  It now takes three arguments
  and works based on a rolling bundle throughput average compared against
  the theoretical bundle bandwidth over a given period (read: it's now
  functional).

  negate the sense of rules.
o Remove the redundant (and undocumented) ``host'' and ``port''
  words (README.changes updated).
o Don't permit (and ignore) garbage instead of the protocol.

Mostly submitted by:  Peter Jeremy <jeremyp@gsmx07.alcatel.com.au>

  the layering.

  We now ``stack'' layers as soon as we open the device (when we figure
  out what we're dealing with).  A static set of `dispatch' routines are
  also declared for dealing with incoming packets after they've been
  `pulled' up through the stacked layers.

  Physical devices are now assigned handlers based on the device type
  when they're opened.  For the moment there are three device types;
  ttys, execs and tcps.

o Increment version number to 2.2
o Make an entry in [uw]tmp for non-tty -direct invocations (after
  pap/chap authentication).
o Make throughput counters quad_t's
o Account for the absolute number of mbuf malloc()s and free()s in
  ``show mem''.
o ``show modem'' becomes ``show physical''.

device per argument rather than the old way of concatenating
everything then splitting the result at commas and whitespace.

Old syntax of ``set device /dev/cuaa0, /dev/cuaa1''
may no longer contain the comma, but syntax such as
``set device "!ssh host ppp -direct label"'' is now
possible.