Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Remove sicontrol(8)'s "ttystat".

In the FreeBSD base system, there are only two utilities that use struct
tty, namely pstat and sicontrol. The sicontrol utility calls the
TCSI_TTY ioctl(), which copies struct tty back to userspace.

sicontrol should not have this functionality. The same data is already
provided by pstat. If we really want to be able to export these numbers
through a file descriptor to userspace, we can export struct xtty, which
should provide a better abstraction. The ttystat option was only used as
a debugging aid.

This makes sicontrol compile in the mpsafetty branch.

Reviewed by: peter
Approved by: philip (mentor)

Mechanically kill hard sentence breaks.

mdoc(7) police: Deal with self-xrefs.

The symbol for Hertz is Hz.

The .Nm utility

mdoc(7) police: removed HISTORY info from the .Os call.

Eliminate mdocNG warnings caused by misplaced or extraneous macro calls.

mdoc(7) police: use canonical form of .Dd macro.

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

remove trailing periods from SEE ALSO.

Remove single-space hard sentence breaks. These degrade the quality
of the typeset output, tend to make diffs harder to read and provide
bad examples for new-comers to mdoc.

Remove comments left since mdoc.template time or just useless comments

$Id$ -> $FreeBSD$

.Sh AUTHOR -> .Sh AUTHORS. Use .An/.Aq.

Use err(3). Add prototypes.

Revert $FreeBSD$ to $Id$

Sort cross references.

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

Fix a bunch of spelling errors in a bunch of man pages.

Rewrite the sicontrol man page to something remotely useful.
I couldn't use the original, as it had unusable copyrights.

Add skeleton manpage, so that make world works......
Correct the naming of the thing.. it's sicontrol, not siconfig as I'm used
to..