- 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

Add NLS catalogs support to gai_strerror(3).
Controlled by NLS define.

Return EAI_OVERFLOW instead of EAI_MEMORY when the supplied buffer is
too short. This conforms to RFC3493, POSIX and XPG6.

Obtained from: NetBSD

separate gai_strerror(3) from getaddrinfo.c.

Requested by: phantom