Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

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

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

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

- Move bus_auto.conf back into /etc/devd/
- Rename bus_auto.conf into usb.conf

Requested by: imp @
MFC after: 14 days

- Move auto-load devd config file into etc/defaults folder.
- Regenerate file after bugfix in the generator.

Suggested by: Jeremy Messenger
MFC after: 14 days

Another vestige of OLDCARD that needs to be retired.

Prodded by: jhb@

Files are installed with mode 444 by default.

Start integrating Bluetooth into rc.d system.

Introduce /etc/rc.d/bluetooth script to start/stop Bluetooth devices. It
will be called from devd(8) in response to device arrival/departure events.
It is also possible to call it by hand to start/stop particular device
without unplugging it.

Introduce generic way to set configuration parameters for Bluetooth devices.
By default /etc/rc.d/bluetooth script has hardwired defaults compatible
with old rc.bluetooth from /usr/share/netgraph/bluetooth/examples. These
can be overridden using /etc/defaults/bluetooth.device.conf file (system
wide defaults). Finally, there could be another device specific override
file located in /etc/bluetooth/$device.conf (where $device is ubt0, btccc0
etc.)

The list of configuration parameters and their meaning described in the
/etc/defaults/bluetooth.device.conf file. Even though Bluetooth device
configuration files are not shell scripts, they must follow basic sh(1) syntax.

The bluetooth.device.conf(5) and handbook update will follow shortly.

Inspired by: Panagiotis Astithas ( past at ebs dot gr )
Reviewed by: brooks, yar
MFC after: 1 week

Start the dreaded NOFOO -> NO_FOO conversion.

OK'ed by: core

For variables that are only checked with defined(), don't provide
any fake value.

o Do not keep a separate list of src/etc/defaults files in
the src/etc makefile. This list was used to manually
install the files from src/etc. Instead, simply change
directory and 'make install'.
o There is no reason for the files in src/etc/defaults to
be installed as writeable.

Reviewed by: ru

Add a general mechanism for creating and applying
devfs(8) rules in rc(8). It is most useful for applying
rules to devfs(5) mount points in /dev or inside jails.
The following line of script is sufficient to
mount a relatively useful+secure devfs(5) in a jail:

devfs_mount_jail /some/jail/dev

Some new shell routines available to scripts that source
rc.subr(5):
o devfs_link - Makes it a little easier to create symlinks
o devfs_init_rulesets - Create devfs(8) rulesets from devfs.rules
o devfs_set_ruleset - Set a ruleset to a devfs(5) mount
o devfs_apply_ruleset - Apply a ruleset to a devfs(5) mount
o devfs_domount - Mount devfs(5) and apply some ruleset
o devfs_mount_jail - Mount devfs(5) and apply a ruleset
appropriate to jails.

Additional rulesets can be specified in /etc/devfs.rules.
If the devfs_system_ruleset variable is defined in rc.conf
and it contains the name of a ruleset defined in /etc/defaults/devfs.rules
or user supplied rulesets in /etc/devfs.rules then that ruleset will
be applied to /dev at startup by the /etc/rc.d/devfs script. It can
also be applied post-startup:

/etc/rc.d/devfs start

This is a more flexible mechanism than the previous method of using
/etc/devfs.conf. However, that method is still available.

Note: since devfs(8) doesn't provide any way for creating symlinks
as part of a ruleset, anyone wishing to create symlinks in a devfs(5)
as part of the bootup sequence will still have to rely on /etc/devfs.conf.

Added this makefile. This is not attached to the build yet. I often
install parts of /etc manually and it helps to have a makefile for
each subdir even if the main makefile doesn't invoke it.