Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

MFC r196421:

Bugfix: all requests for creating vnets via vimage -c were always
reported as failures, even if the actual library / system call
would succeed, because error message would be reported if the return
value from jail_setv() call was >= 0, and if not, then if that same
value was < 0, i.e. always. The correct behavior is to abort (only)
if jail_setv() returns < 0.

Approved by: re (rwatson), julian (mentor)

Approved by: re (rwatson)

Bugfix: all requests for creating vnets via vimage -c were always
reported as failures, even if the actual library / system call
would succeed, because error message would be reported if the return
value from jail_setv() call was >= 0, and if not, then if that same
value was < 0, i.e. always. The correct behavior is to abort (only)
if jail_setv() returns < 0.

Approved by: re (rwatson), julian (mentor)

MFC r196409:

vimage(8) is a legacy CLI interface for managing jails associated with
network stack instances, which is provided for compatibility with
older applications. This change brings it back to life in a followup
to the initial conversion of vimage to use the new jail(4)
userland-kernel API:

- when creating vimages via "vimage -c", by default turn on a few
options expected by legacy applications, such as allow operations on
raw sockets, FS mounts etc, and allow jail-related parameters to be
optionally configured.

- introduce the "-m" modifier which allows for configuring jail
parameters of existing vimages / vnet-jails.

- make "vimage name command ..." actually work.

- when reassigning ifnets to vnets using "vimage -i", attempt to rename
the ifnet as "ethXXX" on arrival in the target vnet. Several legacy
applications are known to depend heavily on such behavior.

- vimage -l lists only jails associated with vnets. The output is
sorted using vimage / jail names as keys.

- vimage -l by default searches only the current level in the jail
hierarchy. Recursive listing can be requested via -r switch.

- vimage -l by default prints only jail names on each line, making
such output suitable for pipelining to other commands. More verbose
output can be obtained via -v switch, and even more jail specific
information will be displayed if -j switch is turned on.

- there's no need to build vimage as statically linked, so update the
Makefile accordingly.

- update the vimage.8 man page.

Approved by: re (rwatson), julian (mentor)

Approved by: re (rwatson)

vimage(8) is a legacy CLI interface for managing jails associated with
network stack instances, which is provided for compatibility with
older applications. This change brings it back to life in a followup
to the initial conversion of vimage to use the new jail(4)
userland-kernel API:

- when creating vimages via "vimage -c", by default turn on a few
options expected by legacy applications, such as allow operations on
raw sockets, FS mounts etc, and allow jail-related parameters to be
optionally configured.

- introduce the "-m" modifier which allows for configuring jail
parameters of existing vimages / vnet-jails.

- make "vimage name command ..." actually work.

- when reassigning ifnets to vnets using "vimage -i", attempt to rename
the ifnet as "ethXXX" on arrival in the target vnet. Several legacy
applications are known to depend heavily on such behavior.

- vimage -l lists only jails associated with vnets. The output is
sorted using vimage / jail names as keys.

- vimage -l by default searches only the current level in the jail
hierarchy. Recursive listing can be requested via -r switch.

- vimage -l by default prints only jail names on each line, making
such output suitable for pipelining to other commands. More verbose
output can be obtained via -v switch, and even more jail specific
information will be displayed if -j switch is turned on.

- there's no need to build vimage as statically linked, so update the
Makefile accordingly.

- update the vimage.8 man page.

Approved by: re (rwatson), julian (mentor)
MFC after: immediately

Remove the interim vimage containers, struct vimage and struct procg,
and the ioctl-based interface that supported them.

Approved by: re (kib), bz (mentor)

Add an interim userland utility for managing vimages / virtualized
network stack infrastructure.

Requested by: julian (mentor)
Approved by: julian (mentor)