Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

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

Merge r240385 from head:
Describe in detail required conditions for receiving the SCM_CREDS
control message and suggest to use LOCAL_CREDS setsockopt() for
reliability.

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

mdoc: drop redundant .Pp and .LP calls

They have no effect when coming in pairs, or before .Bl/.Bd

It's silly to claim recv(2) is to be removed in favour of recvfrom(2)
(at least at this time :) ).

Approved by: gnn (mentor)

Per Regents of the University of Calfornia letter, remove advertising
clause.

# If I've done so improperly on a file, please let me know.

Bump modification date for last update.

Catch up struct cmsghdr and struct msghdr in the manual page with the
actual structures in socket.h (which were updated 7 years ago).

MFC after: 1 week

Fix a typo

Remove a useless word.

PR: 94087
Submitted by: Tadaaki Nagao <nagao@iij.ad.jp>
MFC after: 3 days

- Massage wording to make it easier to understand and fix some grammar.

Submitted by: sbahra at gwu dot edu
Reviewed by: ru@
Approved by: ceri@
MFC after: 3 days

-mdoc sweep.

Document the ECONNRESET errno value.

Eliminate macro calls inside literal displays.

Scheduled mdoc(7) sweep.

``NULL is a specific instance of a null pointer constant; the generic is
a "null pointer".''

Making good use of the excellent explanations sent to me by Ruslan
Ermilov, Garrett Wollman and Bruce Evans, correct the descriptions of
null pointers. They are just "null pointers", not nil, not NULL or
".Dv NULL".

Suggested by: ru, wollman, bde
Reviewed by: ru, wollman
Pointy hat: keramida

Use .Dv NULL when referring to NULL C pointers, instead of "nil".

Document EMSGSIZE return from recvmsg due to insufficient free files
when transfering rights (file descriptors.)

Document the MSG_DONTWAIT flag.

Add restrict qualifiers. (docs)

PR: 44394
Submitted by: Craig Rodrigues <rodrige@attbi.com>

mdoc(7): Properly mark C headers.

mdoc(7) police: "The .Fa argument.".

mdoc(7) police: Tidy up the syscall language.

Stop calling system calls "function calls".

Use "The .Fn system call" a-la "The .Nm utility".

When referring to a non-BSD implementation in
the HISTORY section, call syscall a function,
to be safe.

mdoc(7) police: Use the new .In macro for #include statements.

Remove whitespace at EOL.

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

mdoc(7) police: remove extraneous .Pp before and/or after .Sh.

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

Prepare for mdoc(7)NG.

Use `Er' variable to define first column width in ERRORS section. It was
initially suggested by mdoc(7) style, but was broken over the years

Introduce ".Lb" macro to libc manpages.

More libraries manpages updates following.

General clean-up of socket.h and associated sources to synchronise up
with NetBSD and the Single Unix Specification v2.

This updates some structures with other, almost equivalent types and
effort is under way to get the whole more consistent.

Also removes a double definition of INET6 and some other clean-ups.

Reviewed by: green, bde, phk
Some part obtained from: NetBSD, SUSv2 specification

Some style and "look" fixes

Reviewed by: mpp

$Id$ -> $FreeBSD$

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

Document SCM_CREDS changes.

Sort cross references.

Correctly use .Fn instead of .Nm to reference function names
in a bunch of man pages.

Use the correct .Bx (BSD UNIX) or .At (AT&T UNIX) macros
instead of explicitly specifying the version in the text
in a bunch of man pages.

This commit was generated by cvs2svn to compensate for changes in r1573,
which included commits to RCS files with non-trunk default branches.

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