Remove $FreeBSD$: one-line forth tag

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

Regularize the Netflix copyright

Use recent best practices for Copyright form at the top of
the license:
1. Remove all the All Rights Reserved clauses on our stuff. Where we
piggybacked others, use a separate line to make things clear.
2. Use "Netflix, Inc." everywhere.
3. Use a single line for the copyright for grep friendliness.
4. Use date ranges in all places for our stuff.

Approved by: Netflix Legal (who gave me the form), adrian@ (pmc files)

forthloader: Remove "EFI boot environment message"

Contrary to what the message says, this is not only executed in an EFI
context- it provides functions for use in an EFI environment. I don't think
there's much reason to broadcast this fact when we haven't in the past, so
just remove it.

Reported by: emaste (a while ago), cperciva

Revert r332275, r332272, r332270

There's problems with them. The order of efi stuff isn't quite right,
and there's various problems. Revert until thos problems can be fixed.

Reviewed by: kevans@

loader: include efi.4th only if we do have uefi

Also simplify efi.4th.

forthloader: Don't break BIOS boots...

I thought I tested this scenario, but clearly I failed to. =(

BIOS boots won't have efi-autoresizecons, so trying to use it as a forth
word fails during include. Use evaluate on "efi-autoresizecons" as a string
instead to move any potential errors to runtime- safely after we've already
checked that we're booting UEFI.

Pointy hat to: me
Reported by: cy

Forth version of EFI autoresizing

r331321 delegated autoresizing to an efi-autoresizecons command that
currently is expected to be done in forth/lua prior to drawing anything
useful.

Add the Forth version of the lua addition in r331321, hook efi.4th up to be
installed.

efiboot? was written by dteske@; anything outside of that may be blamed on
me.

Move sys/boot to stand. Fix all references to new location

Sponsored by: Netflix