Remove $FreeBSD$: one-line .c comment pattern

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

ficl: Fix a typo in a comment

- s/segement/segment/

MFC after: 3 days

Revert r326855: Cargo cut a fix for the regressions r326585 caused.

This was an experiment that landed in the wrong branch and was pushed
accidentally. It's best if it is ignored because the difference was
due to vers.o being different, not float.o... And it was confirmed to
not fix anything...

Pointy Hat to: imp

Cargo cut a fix for the regressions r326585 caused.

We need to include ficl.h after the standard includes, rather than
before them. It changes the generated code in ways that haven't been
completely analyized. This restores the old code generation (as
verified by md5 changing back for zfsloader).

This should restore GPT + ZFS and GPT + ZFS + GELI booting that was
broken in r326585 (or would have been if r326584 hadn't broken the
build).

Sponsored by: Netflix

Include ficl.h before anything else and avoid including anything at
all if we're not building float.

Sponsored by: Netflix

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

Sponsored by: Netflix