This leaves the iscsi package for the iSCSI initiator, and the new
package provides the CAM target layer (including the iSCSI target).

Reviewed by:	manu, des, jhb
Approved by:	des (mentor)
Differential Revision:	https://reviews.freebsd.org/D50287

This is a residual of the $FreeBSD$ removal.

MFC After: 3 days (though I'll just run the command on the branches)
Sponsored by: Netflix

So far only "ctladm port -c" and "ctladm port -r" are covered.

MFC after:	2 weeks
Sponsored by:	Axcient
Reviewed by:	mav
Pull Request:	https://github.com/freebsd/freebsd-src/pull/1279

Reviewed by:	imp
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D44719

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

While here only compile both of them if WITH_ISCSI is set (this is the default).

Reviewed by:	emaste
Differential Revision:	https://reviews.freebsd.org/D30755
Sponsored by:	Diablotin Systems

ioctl frontend ports.

This revision introduces two changes to CTL:
- Changes the way options are passed to CTL_LUN_REQ and CTL_PORT_REQ ioctls.
  Removes ctl_be_arg structure and associated logic and replaces it with
  nv(3)-based logic for passing in and out arguments.
- Allows creating multiple ioctl frontend ports using either ctladm(8) or
  ctld(8).
  New frontend ports are represented by /dev/cam/ctl<pp>.<vp> nodes, eg /dev/cam/ctl5.3.
  Those device nodes respond only to CTL_IO ioctl.

New command-line options for ctladm:
# creates new ioctl frontend port with using free pp and vp=0
ctladm port -c
# creates new ioctl frontend port with pp=10 and vp=0
ctladm port -c -O pp=10
# creates new ioctl frontend port with pp=11 and vp=12
ctladm port -c -O pp=11 -O vp=12
# removes port with number 4 (it's a "targ_port" number, not pp number)
ctladm port -r -p 4

New syntax for ctl.conf:
target ... {
    port ioctl/<pp>
    ...
}

target ... {
    port ioctl/<pp>/<vp>
    ...

Note: Most of this work was made by jceel@, thank you.

Submitted by:	jceel
Reworked by:	myself
Reviewed by:	mav (earlier versions and recently during the rework)
Obtained from:  FreeNAS and TrueOS
Relnotes:	Yes
Sponsored by:	iXsystems Inc.
Differential Revision:	https://reviews.freebsd.org/D9299

The goal of this work is to remove the explicit dependency for ctl(4)
on iscsi(4), so end-users without iscsi(4) support in the kernel can
use ctl(4) for its other functions.

This allows those without iscsi(4) support built into the kernel to use
ctl(4) as a test mechanism. As a sidenote, this was possible around the
10.0-RELEASE period, but made impossible for end-users without iscsi(4)
between 10.0-RELEASE and 11.0-RELEASE.

Automatically load cfiscsi(4) from ctladm(8) and ctld(8) for backwards
compatibility with previously releases. The automatic loading feature is
compiled into the beforementioned tools if MK_ISCSI == yes when building
world.

Add a manpage for cfiscsi(4) and refer to it in ctl(4).

Differential Revision:	D10099
MFC after:	2 months
Relnotes:	yes
Reviewed by:	mav, trasz
Sponsored by:	Dell EMC Isilon

This simplifies make logic/output

MFC after:	1 month
Sponsored by:	Dell EMC Isilon

Reduce overlinking