MFC r272007

Correct display of bhyve SMBIOS UUIDs with dmidecode by bumping the version.

The mixed little/big-endianness of SMBIOS UUIDs was clarified in v2.6
of the SMBIOS spec. dmidecode uses the reported version of SMBIOS to
determine the layout and what to byte-swap.

bhyve's SMBIOS reported as 2.4 though it implemented the 2.6-style of
memory layout. This resulted in dmidecode reporting a different
UUID than one passed in via the -U option.

Fix by exporting a version of 2.6.

Approved by:	re (gjb)
Update stable/10 to -BETA3 as part of the 10.1-RELEASE
cycle.

Approved by:	re (implicit)
Sponsored by:	The FreeBSD Foundation
Revert r272128:
  Though this passes the buildworld test, this fails during
  installworld with:

  make[3]: "/releng/scripts-release/chroots/10/i386/release/etc/devd/Makefile"
  line 13: Malformed conditional (${MK_HYPERV} != "no")

Approved by:	re (implicit)
Sponsored by:	The FreeBSD Foundation
Forced commit to reflect the real 10.1-BETA3 point.

Approved by:	re (implicit)
Sponsored by:	The FreeBSD Foundation
Revert r272149, which introduces obscure vestiges from the
r272128 reversal.

Approved by:	re (implicit)
Sponsored by:	The FreeBSD Foundation
Properly revert r272128.

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