Use 'load_rc_config_var CMD VAR' to set VAR for "foreign" rc.conf(5)
variables that may be set in /etc/rc.conf.d/CMD instead of /etc/rc.conf.
Fixes PR 20768 from Pavel Cahyna.

Use new style command substitution.

Add an _rc_subr_loaded variable, set to ":" by rc.subr. Scripts can use this
for a speedup by doing:
$_rc_subr_loaded . /etc/rc.subr

branches: 1.10.4;
ipnat needs to be before SERVERS - one may need NAT for servers to work
(eg, ntpdate).

change behaviour of 'reload' to only reload the NAT rules and NOT flush
the state table, making it much more useful.

The behaviour of 'restart' is unchanged (flush state table and reload
rules), but is now done slightly more elegantly.

ok'd by lukem.

Print a warning message if IP forwarding is not activated (PR#10295).

branches: 1.7.2;
Correct the "direction" of the barrier dependencies (DAEMON, LOGIN,
NETWORKING, and SERVERS) by specifying that certain things should
come BEFORE a given barrier, rather than having the barrier REQUIRE
a service. This allows scripts to be removed without having to
edit the barrier dependencies.

As discussed on tech-userlevel, and approved by Luke.

- only perform the checkyesno on the variable named in $rcvar (rather than
implicitly using $name if $rcvar isn't set), and always perform this check,
even when using start_cmd (et al).
this check is performed before the pidcmd
is run, speeding up scripts that weren't going to be run anyway.
this should speed up booting slow systems.

- take advantage of the above and remove
start_precmd="checkyesno foo"
in scripts that use start_cmd.

- explicitly set rcvar=foo in the rc.d/foo scripts which have an equivalent
rc.conf entry

- fix `rcvar' and `restart' when $rcvar isn't set.
these above changes fix PR [bin/11027].

- when doing `force*', ignore the return value of *_precmd.
this fixes PR [bin/10781].

- rename what sysdb provides from `databases' to `sysdb', to reflect
the name of the script.

- improve the comments in rc.subr

needs to run after mountcritremote, since ipnat is in /usr/sbin

branches: 1.4.4;
Use load_rc_config() (from rc.subr) instead of sourcing /etc/rc.conf.
This allows us or a user to change the configuration file method in
one place - rc.subr - without having to edit all of the rc.d/* files.

use extra_commands= instead of using 2nd argument to run_rc_command

Rearrange so the ouput of this is a bit more cosmetic.

branches: 1.1.1;
Initial revision