- 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

Back out my "3;3" -> something change. While technikally the same, it only
leads to confusion.

el_GR: change "0;0" to "-1".
"0" is repeater for previous number, not no grouping

I change my mind a bit: assuming last \0 is contrproductive since will cause
user confusion, so specify it directly, i.e. change "3" to "3;0".
In this style "3;" must not cause repeating (converted to \3, CHAR_MAX, \0)
NOTE: still no proper conversion done in localeconv()

Replace "3;3" with "3". This is cosmetique, all integer before \0 (i.e. \3)
repeated forever according to SUSv2

Remove "0;0" - \0 means not "no grouping" but repeat forever previous char,
and added automatically. Empty string could be parsed later into CHAR_MAX
(real "no grouping") by localeconv()

Add da_DK locale support for LC_MESSAGES, LC_MONETARY, and LC_NUMERIC.