Updated Scottish Gaelic localisation from Michael Bauer
(from Nov 2013: <http://mail.gna.org/public/freeciv-i18n/2013-11/msg00011.html>,
downloaded from <http://www.akerbeltz.org/sealach/gd-freeciv.po>)
merged into trunk using the procedure of patch #4650.

Stats on trunk:
freeciv: 79%: 5113 translated, 808 fuzzy, 573 untranslated.
nations: 84%: 1547 translated, 151 fuzzy, 148 untranslated.
ruledit: 19%: 5 translated, 11 fuzzy, 11 untranslated.

git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25516 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Updated Russian translation for trunk from Konstantin Vedeneev
(from February 2014:
<https://mail.gna.org/public/freeciv-i18n/2014-02/msg00009.html>).

Stats on trunk:
freeciv: 89%: 5793 translated, 443 fuzzy, 258 untranslated.
nations: 99.5%: 1837 translated, 6 fuzzy, 3 untranslated.
ruledit: 63%: 17 translated, 3 fuzzy, 7 untranslated.

git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25517 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Introduced adv_want typedef for advisor and default AI want values.
It's still an int like before, but now easily changeable.

See patch #4924


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25518 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Added effects cache for advances

See patch #4923


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25519 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Made culture victory conditions ruleset defined

See patch #4738


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25520 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Use C11 _Static_assert if available

See patch #4920


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25521 a0f10bec-cc02-0410-94fc-a9cfff90b4cd