Remove $FreeBSD$: one-line forth tag

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

loader: Fully reset terminal settings, not just colors

Reviewed by: kevans
Reviewed by: tsoome
Approved by: mav (mentor)
MFC after: 1 week
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D21733

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

Sponsored by: Netflix