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

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

- Fix typo

PR: kern/132773
Reported by: Alan R. S. Bueno <alan.bsd@gmail.com>
Submitted by: Murilo Opsfelder <mopsfelder@gmail.com>

- Add Brazilian Portuguese catalog [1]
- Fixes for German catalog [2]

PR: kern/132694 [1], conf/80504 [2]
Submitted by: Murilo Opsfelder <mopsfelder@gmail.com> [1],
brueffer [2]