igor -Ry and some other rewording and fixes.

Differential Revision:	https://reviews.freebsd.org/D651
Reviewed by:	wblock
Sponsored by:	Absolight
igor -Ry and some other rewording and fixes.

Differential Revision:	https://reviews.freebsd.org/D653
Reviewed by:	wblock
Sponsored by:	Absolight
igor -Ry and some other rewording and fixes.

Differential Revision:	https://reviews.freebsd.org/D655
Reviewed by:	wblock
Sponsored by:	Absolight