- Refine entry for r271130 since a follow-up commit   adds 64-bit libstand.
- Refine entry for r271130 since a follow-up commit
  adds 64-bit libstand.

- Document r271135, initial UEFI boot support.

- Document r271136, boot1.efi, boot1.efifat, loader.efi
  installed to /boot.

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

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase