- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

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

Add -c option to sesd to make it clear enclosure status after reading it
in case if it is not permanent and was fixed.

Adopt for modern FreeBSD.

Requested by: az

Fixed the misplaced $FreeBSD$.

Removed trailing whitespace.

Get rid of duplicates.

Fix Makefiles to actually work.

mdoc(7) police: sort SEE ALSO xrefs (sort -b -f +2 -3 +1 -2).

Update SES userland examples to something out of the toy stage.
Approved: jkh