help get this right.

function pointers from the outside will segfault. Idea, hints and feedback
from deraadt. ok deraadt.

need for root privileges for processes that create the sockets later.
ok deraadt@

Noticed by deraadt@

deraadt and millert ok

long-standing annoyance that atrun's granularity is 10 minutes.
Most at jobs run with a 1 minute granularity.  Jobs submitted via
"at now" or "batch" will run immediately.  Includes a rewritten
cron(8) man page.  at(1) will be integrated more closely into
cron at a future date.
Upgrading notes:
the atrun job in root's crontab should be removed.
the /var/at/spool directory is no longer used

ok henning@, deraadt@

access to devices I/O ports from userland. Only BWX machines supported
for now. Added a man page.
Ok deraadt@, miod@.

ok millert@

aliases to fake up strtou?q().  espie@ OK.

starts, do a chroot to /var/empty and change to user nobody.
hi mom, i'm in jail!

that the first char in the line is not NUL after killing comments.

ok frantzen@

field separators as empty field.  This is not what we want for
whitespace-delimited fields.

o make first arg const since we don't modify it
o use strsep() instead of strtok() as strtok() changes internal state
o add some bounds checking and use strlcat() instead of pointer arithmetic
o ANSI function headers
Originally based on a patch from Lars J. Buitinck but much modified.

generic as /dev/smartcard or similar.
deraadt@ ok.

add more simple filter rule examples
"commit it" deraadt@