- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

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

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

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

Sync with C.msg r199083.

Use better Korean translation for `trap'

Requested by: many Korean users from bsdforum.or.kr
Submitted by: perky
Approved by: anholt (mentor)

Add korean NLS message catalogs for libc

Submitted by: Hye-Shik Chang <perky@FreeBSD.org>
PR: misc/78290