Remove $FreeBSD$: two-line nroff pattern

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

kbdmap.5: Use current names for ASCII control codes lf, ff, us

Refer to the old names nl, np, ns as historical aliases.

PR: 205776, 205778
MFC After: 1 week
Sponsored by: The FreeBSD Foundation

Update man-pages to correctly refer to changed pathes and naming conventions
for systems with vt(4) consoles.

MFC after: 3 days

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.

Make the keyboard layer Unicode aware.

Just take keyent_t to use an u_int to store the Unicode codepoints.
Unfortunately the keymap is now too big to be loaded using an ioctl
argument, so change the ioctl to pick a pointer.

This change breaks kbdcontrol ABI. It doesn't break X11, because X11
doesn't do anything with syscons keymaps. It just switches the device
out of K_XLATE.

Obtained from: //depot/user/ed/newcons/...

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

Some clarifications to make keyboard configuration under syscons.

PR: 89325
Submitted by: Oliver Fromme <olli@secnetix.de>
Reviewed by: emax

mdoc(7) janitor:
- Fix hard sentence breaks.

MFC after: 3 days

Document machdep.enable_panic_key.

Submitted by: Craig Rodrigues

MFS: in HISTORY section, fix release number of first appearance

Remove whitespace at EOL.

Document newly added "paste" keyword

mdoc(7) police: use the new features of the Nm macro.

Man page for the file format accepted by "kbdcontrol -l".

PR: 19260
Reviewed by: sheldonh