- 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 comment stating that UCS-4 really used here, not UTF-8

- Use SWIDTH0 for combining characters. [1]
- Unicode 4.1 related changes:
- Add definitions for a new range of code points
U+1DC0..U+1DFF "Combining Diacritical Marks Supplement".
- Add U+04F6 and U+04F7 to the Cyrillic range.
- Mark U+034F "Combining Grapheme Joiner" as non-printable.
- Add new combining characters in the range U+0350..U+035F
to the section "Combining Diacritical Marks".

PR: misc/100212 [1]
Submitted by: "J.R. Oldroyd" <<fbsd AT opal.com>>
Reviewed by: "J.R. Oldroyd" <<fbsd AT opal.com>> (revised patch)

Add UTF-8 versions of all the currently supported system locales. Most of
the hard work was done by Hye-Shik Chang in the misc/utf8locale port; I made
a few minor adjustments and merged the makefiles.

PR: 44307