Remove claim that fortresses/airbases can't be built on civ2civ3 rivers;
they can again since r25487.

See gna bug #22308.

git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25536 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Move non-built roads (e.g. rivers) and bases out from under
"Terrain Alterations" in the help hierarchy.

Reported by Marko Lindqvist (cazfi@gna).

See gna bug #22167.

git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25537 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Fix broken client city map UI for almost any ruleset which had a city
radius configuration other than the default.

Reported anonymously.

See gna bug #22302.

git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25538 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Fix reading of translation domain out of nation ruleset packet
(and hence translations of nations in the "extended" set).

See gna bug #22318.

git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25539 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Non-military units no longer impose ZOC in classic, multiplayer, and
experimental rulesets.

See gna patch #4818.

git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25540 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Airborne units except fighters and helicopters no longer impose ZOC when
over land in the classic, multiplayer, and experimental rulesets.

See gna patch #4935.

git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25541 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Fixed threaded AI workers not to consider NoBonus road types to give speed
benefits.

See bug #22311


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25545 a0f10bec-cc02-0410-94fc-a9cfff90b4cd