fix inspired by and closes pr 4495
ok krw@

can be changed via sysctl's.
ok markus@

client; from amh@POBOX.COM

show how to disable it;
ok deraadt@

output goes to syslog and not console by moving around log_init
OK henning@, markus@ and mblamer@

spews1 the default.  OK deraadt@

From: Matthias Kilian <kili@outback.escape.de>

with a set skip statement to the same effect, performs way better
suggested by Stuart Henderson <stu@spacehopper.org>, theo ok

and EINTR, so do it, more or less from bgpd

From Solar Designer based on changes in FreeBSD.  OK deraadt@

From: Thomas Jarosch <thomas.jarosch@intra2net.com>

Kill old files that are no longer compiled.
okay theo

Make sure tolower/toupper use the whole 8 bits.
okay deraadt@
thanks to everyone who tested

relevant anyway;
ok jaredy@

- avoid first person.
ok jmc

okay deraadt@, millert@, krw@

from netbsd pr #30872 (anonymous post);
ok deraadt@ krw@

November of that year; however, the corresponding man changes were
never backed out.
do that now, reversing -r1.3 of this file;
original pr and diff from peter philipp (this commit closes pr #4309);
i chose to revert -r1.3 rather than accept the new wording from peter;
thanks jaredy@ for tracking all this down, and supplying the ok...

- break long lines
ok jmc

- use `$' for command prompts
- clean up: use a bullet list instead of adding junk to denote list
items
ok jmc