Marked classic ruleset map labels translatable and unified their capitalization.

Reported by Jacob Nevins <jtn>

See bug #20588


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@23910 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Save cities.ruleset from freeciv-ruledit

See patch #4357


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@23912 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Fixed linking of Qt-client against static libSDL-mixer.

See bug #21378


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@23913 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Added 'rmcauses' list of ways extra can be removed.

See patch #4355


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@23915 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Animals do not leave their home terrains.

See patch #4356


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@23916 a0f10bec-cc02-0410-94fc-a9cfff90b4cd