man pages: add missing commas between subordinate and main clauses

jmc@ dislikes a comma before "then" in a conditional, so leave those
untouched.

ok jmc@

the ellipsis is not an optional argument; while here, sync the usage
and synopsis of commands

lots of good ideas by jmc@

ok jmc@

convert to new .Dd format;

remove references to bad144(8) man page;

escape punctuation;
ok deraadt@

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rescinded 22 July 1999.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

typos;

many tweaks by millert@ (thanks)
thanks mpech@ for help with adduser(8)

ok millert@

o) start new sentence on a new line;
o) wrap long lines;
o) fix bogus .Xr usage;
o) we don't like blank lines;
o) always close .Bl tags;
o) OpenBSD -> .Ox;
o) don't like .Pp before .Ss;

millert@ ok;

Remove hard sentence breaks, and some other cleanup along the way.

remove reference to format(8), which does not exist; form@kti.nsc.ru

start to remove non-escaped trailing whitespace, it can confuse troff; pjanzen@

remove argument from .Os macros so value in /usr/share/tmac/mdoc/doc-common
is used instead; kwesterback@home.com

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

remove redundancy

alphabetize SEE ALSO entries and order them numerically according to section

sbin/ man page fixes

update rcsid

initial import of NetBSD tree