improve markup quality in the cases found by the new "--" style message

Add, correct, and improve HISTORY sections.
From Sevan Janiyan <venture37 at geeklan dot co dot uk>.
Verified using http://minnie.tuhs.org/.

schwarze poinits out that -n conflicts with posix, so document it as such,
rather than as an extension;

ok schwarze

some general and portability notes;
ok millert schwarze

add an EXIT STATUS section for /bin;

bump the posix reference in STANDARDS to IEEE Std 1003.1-2008, with a few
updates to follow;

i saw the previous was wrong as soon as i committed it: put the
built-in blurb in STANDARDS; we did once have a COMPATIBILITY section
which we merged with STANDARDS, so i think this is appropriate. i

i saw the previous was wrong as soon as i committed it: put the
built-in blurb in STANDARDS; we did once have a COMPATIBILITY section
which we merged with STANDARDS, so i think this is appropriate. it
certainly feels better than adding single sentences randomly to the
end of text bodies.

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document, consistently, those apps which also exist as built-ins
on certain shells; do not try to document changes between the
implementations, but at least warn of their existence;

diff from Ingo S

document, consistently, those apps which also exist as built-ins
on certain shells; do not try to document changes between the
implementations, but at least warn of their existence;

diff from Ingo Schwarze

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replace hardcoded exit values with .Ex macros;

ok jmc@

convert to new .Dd format;

- consistent STANDARDS blurb
- note which options are extensions to POSIX

discussed w/ deraadt otto millert

Remove the advertising clause in the UCB license which Berkeley
rescinded 22 July 1999. Proofed by myself and Theo.

escaped whitespace at EOL using "\ \&" so as not to confuse groff.

Put space back at the end of the line, it's required there.

Initial patch for a new mdoc issue.
Powered by @mantoya:
o) kill extra line in the end of file;
o) kill extra space in the end of line;
o) replace blank lines with .Pp;

millert@ ok

Change all option list specifications to ".Bl -tag -width Ds". Most man
pages just needed their -width parameter tweaked to "Ds", which provides
a nice width of 6 constant characters. For consistency

Change all option list specifications to ".Bl -tag -width Ds". Most man
pages just needed their -width parameter tweaked to "Ds", which provides
a nice width of 6 constant characters. For consistency more than anything.

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Note that when no arguments are given, only the newline is printed.

consistency

always give .Nm macros an argument in SYNOPSIS sections; krw@tcn.net

start killing redundant .Nm macro arguments (mandoc ``remembers'' the first one
it's given)

use .Dq/.Sq macros instead of `` ''s and ` 's (think typesetting and future
processing); kill redundant .Pp macros; other misc fixes

First complete sweep of man pages, bin/. Command/function names previously
(incorrectly) capatilized are fixed. Comma splices, hyphenations, SYNOPSIS
cleanups, other miscellaneous typos.

update rcsid

initial import of NetBSD tree