Ignore tautological-compare errors in debug builds.

See patch #4421


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@24147 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Fixed reversed "Show All" button.

See bug #21435


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@24150 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Give to civ2civ3 ruleset wonders that have no icons in supplied tilesets
unique primary graphic tags, and make oracle icon only fallback.

See patch #4427


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@24153 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Removed comment from civ2civ3.serv claiming that civ2civ3 rules are used by default.


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@24155 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
List terrain changing ACTIVITY_MINE as "Plant"

See patch #4382


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@24157 a0f10bec-cc02-0410-94fc-a9cfff90b4cd