Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

Add libxo(3) support to sesutil(8)

This is useful to simplify parsing "sesutil map"

Submitted by: nikita.kozlov@blade-group.com
MFC after: 3 weeks
Relnotes: yes
Sponsored by: blade

Directly print the extra status instead of filling a buffer
then printing it.

This prepares the code to make it libxo friendly

Reviewed by: manu, Nikita Kozlov (nikita elyzion.net)
MFC after: 2 weeks
Sponsored by: Gandi.net

sesutil: Add extra information specific to some SES devices to sesutil map

Rework stat2ascii preparing a buffer of what could be printed. This prevent the
risk of overflowing a static buffer.

Do not print those informations anymore in the "status" but into a new
"extra status" only printed if there are actually extra things to print.

Now add those extra informations:

* Thermal sensor temperature
* Cooling devices speed
* Voltage sensors, current consumption

Tested by: AllanJude
Sponsored by: Gandi.net
Differential Revision: https://reviews.freebsd.org/D4520

Improve and expand sesutil(8)

- Return an error if no matching device is found when the locate command is run
- Enhance the locate command to be able to address drive bays with no disk, or where the SES controller has not made the mapping to the device name
- Added the fault command, similar to locate, but a different SES property. On some of my controllers locate blinks the activity light, others the fault light. The fault command keeps the fault light on constant.
- Improve the usage() output and use it everywhere
- Added the map command, displays all elements connected to each (or the specified) ses(4) controller
- Added the status command, returns the overall status of the ses(4) controller

Reviewed by: wblock (man page, earlier version)
Approved by: bapt (mentor)
MFC after: 3 weeks
Relnotes: yes
Sponsored by: ScaleEngine Inc.
Differential Revision: https://reviews.freebsd.org/D3580

Add a new sesutil(8) utility

This is an utility for managing SCSI Enclosure Services (SES) device.

For now only one command is supported "locate" which will change the test of the
external LED associated to a given disk.

Usage if the following:
sesutil locate disk [on|off]

Disk can be a device name: "da12" or a special keyword: "all".

Reviewed by: mav
MFC after: 1 month
Relnotes: yes
Sponsored by: gandi.net
Differential Revision: https://reviews.freebsd.org/D3544