MFC: r287473

MFC: r287473
  Add the new sesutil(8) utility for managing SCSI Enclosure Services (SES) device.

MFC: r287493
  Fix iteration bug

MFC: r287485, r287494, r287992
  Please the angry gcc 4.2 gods

MFC: r287988
  Improve and expand sesutil(8)

  Return an error if no matching device is found
  Locate can address a slot, in addition to a drive
  Added fault, similar to locate but blinks a different LED
  Added the map command, lists all devices connected to the SES controller
  Added the status command, overall status of the SES controller

MFC: r292092
  sesutil: fix map not printing the status of the LED device in an array

MFC: r292093
  sesutil: pass the correct element type when printing the SES map

MFC: r292121
  sesutil: Add extra information specific to some SES devices to sesutil map

MFC: r292122
  Fix sesutil locate when a sesid is passed to locate command

MFC: r292262
  Show the enclosure name and id in sesutil map

Relnotes:	yes
Sponsored by:	Gandi.net
Sponsored by:	ScaleEngine Inc.

git-svn-id: svn://svn.freebsd.org/base/stable/10@293865 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f