- 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

Use -1 for CHAR_MAX instead of empty string as recommended by POSIX
Still not parsed in localeconv() in anycase

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 fr_FR locale support for LC_MESSAGES, LC_MONETARY, and LC_NUMERIC.