Freed civ2 ruleset barbarians or pirates from waste.

Reported by Anonymous

See bug #21629


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25527 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Made local functions of savegame2.c static.

See patch #4929


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25530 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Increased move rates of alien ruleset Sea and Antigravity units

See patch #4859


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25531 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Added man-link for sdl2-client

See patch #4359


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25533 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Moved all research related entries in game.ruleset to [research] section.

See patch #4922


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@25534 a0f10bec-cc02-0410-94fc-a9cfff90b4cd