Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

Remove picobsd build scripts and the remaining tinyware

Postings were sent to -arch@ on 2019/09/13 and 2019/10/01, proposing and
confirming a removal of these scripts on 2019/10/31, due to significant work
needed to bring this into the modern world and nobody having done this work
in the past couple of years. No objections or proposed work was raised in
response to these postings. The tinyware may see a resurrection into a
separate repo for archival purposes if any users of it show interest in
doing so.

MFC after: never

Last few instances of "sentence not on new line".

MFC after: 1 month

o -f, -i, -K, -q, -v, -X flags documented.

Fix mandoc warnings/errors.

MFC after: 1 week

Add references to vt(4) and the configuration files in /usr7share/vt where
appropriate (i.e. where syscons was already mentioned and vt supports the
feature). Comments in defaults/rc.conf are updated to match the contents
of the modified man-page rc.conf(5).

Reviewed by: pluknet, emaste
MFC after: 3 days

use .Mt to mark up email addresses consistently (part6)

PR: 191174
Submitted by: Franco Fichtner <franco at lastsummer.de>

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

Document NANO_ARCH which is no longer hard coded as of r205980.

Approved by: imp@

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.

(finally) document -n

- Import the HEAD csup code which is the basis for the cvsmode work.

Fix markup.

NanoBSD modifications:

* Break out the boot0 loader selection into a variable - NANO_BOOTLOADER -
so people like me with VGA consoles can override the default (which is
to use boot0sio)
* Put the boot0 configuration options in NANO_BOOT0CFG in case you want
to override the defaults.
* Modify nanobsd.8 to reflect the changes and hint the console default is
serial.

MFC after: 2 weeks

- capitalize the first letter of the first word in the sentence

Approved by: trhodes (mentor), keramida (mentor)

Add nanobsd(8) manual page.

Reviewed by: ru
Approved by: trhodes (mentor), keramida (mentor)
MFC after: 1 week