Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

Style: don't mix decimal and hex values in the same file (convert all to
decimal).

MFC after: 2 weeks

Add Ukrainian language support for FreeBSD console.

Submitted by: Olexander Kunytsa <kunia@istc.kiev.ua>
Reviewed by: ache, phantom, ru, sobomax