Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

There is no longer a need to abstract ${rcvar_manpage} as we are not
attempting to maintain compatibility with NetBSD for some years now.

In regards to the "Starting foo:" type messages at boot time, create and
employ a more generic solution, and use it in the individual rc.d scripts
that also have an $rc_quiet test:

1. Add check_startmsgs() to rc.subr.
2. In the rc.d scripts that use rc_quiet (and rc.subr) substitute
variations of [ -z "$rc_quiet" ] with check_startmsgs
3. In savecore add a trailing '.' to the end of the message to make it
more consistent with other scripts.
4. In newsyslog remove a : before the terminal '.' since we do not expect
there to be anything printed out in between to make it more consistent.
5. In the following scripts change "quotes" to 'quotes' where no variables
exist in the message: savecore pf newsyslog
6. In the following scripts substitute if/then/fi for the simpler (and
more consistent) check_startmsgs &&: faith stf
7. In the following scripts separate the "Starting foo:" from the terminal
'.' to make them more consistent: moused hostname pf
8. In nfsclient move the message to its own line to avoid a style bug
9. In pf rc_quiet does not apply to the _stop method, so remove the
test there.
10. In motd add 'quotes' around the terminal '.' for consistency

As previously discussed, add the svn:executable property to all scripts

Move a lot of diagnostic output behind $rc_quiet in scripts that
implement their own start command.

Add a dummy script, FILESYSTEMS, which depends on root and mountcritlocal
and takes over mountcritlocal's role as the early / late divider. This
makes it far easier to add rc scripts which need to run early, such as a
startup script for zfs, which is right around the corner.

This change should be a no-op; I have verified that the only change in
rcorder's output is the insertion of FILESYSTEMS immediately after
mountcritlocal.

MFC after: 3 weeks

Don't be paranoid about hostname(1) and order the things logically.

Pointed out by: ceri

Don't nag about unset $hostname if DHCP is in use.

Pointed out by: ceri

Handle the case when the admin forgot to set $hostname,
which can happen in new installations: advise to set the
variable and refer to rc.conf(5).

Remove the requirement for the FreeBSD keyword as it no longer
makes any sense.

Discussed with: dougb, brooks
MFC after: 3 days

- Use "/bin/hostname" explicitly instead of "hostname".

Approved by: tobez
MFC after: 1 week

Overhaul the /etc/rc.d/diskless script by splitting it out into
hostname, resolve, tmp, and var scripts. The latter three are new and
were repo copied. These scripts no longer depend on being booted with
and NFS root instead attempt to automaticly create mfs /tmp and /var
volumes if the they are not writable. This behavior can be overridden
in /etc/rc.conf.

Reviewed by: luigi, pjd

One tab too much.

Teach 'hostname' script how to act inside a jail.

No objections from: mtm, arch@

tty whacking should occur early, but not so early that the
required commands are not on a mounted file system.

Noticed by: bde

Make ipfilter, ipnat, ipmon, and ipfs behave more like the old rc.
o group them together so they run one right after another
o use the NetBSD supplied ipfs script instead of tacking
it on to the end of ipnat
o Load the ipl module in ipnat and ipfilter, if it's not already
loaded
o In ipmon and ipnat show a warning if neither ipfilter nor
ipnat is enabled or the ipl module is not loaded, and exit

Approved by: markm (mentor) (implicit)
Tested by: leafy <leafy@leafy.idv.tw>

Break out and rewrite the network setup scripts.
o /etc/network.subr contains common subroutines used for seting
up network interfaces
o rc.d/hostname sets the hostname if not already set
o rc.d/nisdomain sets the nis domain *after* rpcbind but
before the yp* daemons. This fixes issues with temporary
hangs when looking up informaion in nis before it's ready.
o rc.d/netif brings network interfaces (minus dhcp) up.
o rc.d/network1 has been disabled and will be retired before
RELENG_5. It will be replaced by rc.d/netif

Approved by: markm (mentor)