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

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

Document the undocumented change in OpenBSD: the ${raisechar}
is no longer set to ^A by default, it's unset.

Reported by: imp, sam

Actually merge OpenBSD changes and local changes (a diff should
be viewed relative to revision 1.24).

Resolve merge conflicts.

Fix an erroneous description of the file descriptor assignments for
the "~C" command.

MFC After: 1 week

- Remove MLINKS to nonexistant manpages
- Change some section numbers to match reality
- For MLINKS to manpages from ports, mention which port installs them

MFC after: 3 days

Baud rate capability is `br', not `ba'.

PR: docs/56426
Submitted by: FUJISHIMA Satsuki <sf@FreeBSD.ORG>

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

Uniformly refer to a file system as "file system".

Approved by: re

Really merge from OpenBSD import (should have been done a year ago).

Reviewed by: markm
Approved by: re

Merge from import. The import was done ages ago, and this diff has been
carried since then.

More consistancy. file system > filesystem

Use `The .Nm utility'

mdoc(7) police: protect trailing full stops of abbreviations
with a trailing zero-width space: `e.g.\&'.

Remove whitespace at EOL.

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

mdoc(7) police: split punctuation characters + misc fixes.

Fix typo reported by Rich Morin <rdm@cfcl.com> on -doc mailing list.
Correct .Xr macro usage.
Also fix few more typos while I'm here.

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

Avoid use of direct troff requests in mdoc(7) manual pages.

Resurrect the 'cdelay' and 'ldelay' features of /usr/bin/tip.

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.

$Id$ -> $FreeBSD$

Add $Id$, to make it simpler for members of the translation teams to
track.

The $Id$ line is normally at the bottom of the main comment block in the
man page, separated from the rest of the manpage by an empty comment,
like so;

.\" $Id$
.\"

If the immediately preceding comment is a @(#) format ID marker than the
the $Id$ will line up underneath it with no intervening blank lines.
Otherwise, an additional blank line is inserted.

Approved by: bde

Typo fix.
PR: 3869
Submitted by: Kazuo Horikawa <k-horik@yk.rim.or.jp>

Sort cross references.

Do not claim that tip is also called cu.

Submitted by: "Ph. Charnier" <charnier@xp11.frmug.org>, PR#1639

Tom Gray's new tip changes to support a modem capabilities database and
fixes to many assorted bugs and misfeatures.
Submitted by: Tom Gray - DCA <dcasba@rain.org>