Remove $FreeBSD$: one-line sh pattern

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

retire sconfig(8) ce(4)/cp(4) configuration tool

The ce(4) and cp(4) drivers have been retired.

Differential Revision: https://reviews.freebsd.org/D33469

Revert "amd64: Do not build sconfig"

This reverts commit a46856c3f9ec86bd8f0436c3f0736783c2f804db.

Requested by: glebius

amd64: Do not build sconfig

We do not build the drivers for this arch so no need to build the
configuration tools.

MFC after: 2 weeks
Sponsored by: Beckhoff Automation GmbH & Co. KG

Fix sconfig(8) build.

Missed that since sconfig(8) was built on i386 only. Since I enabled
cp(4) on amd64, enable sconfig(8) as well.

Fixes: 6aae3517ed25

NVME support is only for x86 and powerpc64.

Implement MK_NVME now that the expression for where NVMe is
complicated. Default it to "yes" for x86 and powerpc64 and
no everywhere else. Use it in camcontrol to define WITH_NVME
for those platforms where we support nvme.

This should fix the newly introduced nvme files to camcontrol
which were building everywhere.

Pointy Hat To: imp
Sponsored by: Netflix

Integrate nvmecontrol(8) into the amd64 and i386 builds.

This includes adding NVMe header files to /usr/include/dev/nvme.

Sponsored by: Intel

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

MF tbemd: Move to using Makefile.arch to select what to build.

Reviewed by: arch@ (no objection)