- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

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

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

Per Regents of the University of Calfornia letter, remove advertising
clause.

# If I've done so improperly on a file, please let me know.

mdoc(7) police: sweep.

Document towlower() and towupper() in separate manual pages instead of
trying to confusingly document both on the same page. The new manual pages
are based on tolower(3) and toupper(3) instead of the old towlower(3).

towlower() appeared twice in the synopsis; one of the occurrences should
have been towupper(). Add towupper() to the Name section while I'm at it.

Obtained from: NetBSD (junyoung)

Use the In macro instead of Fd. Add crossref to wctrans(3). Refer to
1003.1-2001 in STANDARDS section.

Manual pages for wide character classification (isw*) and case conversion
(tow*) functions from NetBSD, unmodified except for the addition of $FreeBSD$.

Obtained from: NetBSD