freeciv: updated 2.4 version to 2.4.0-beta2

Signed-off-by: Marko Lindqvist <cazfi74@gmail.com>
gnome-games: initial add 2.32.1

Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
supertux2: replace libsdl to virtual/libsdl dependency

Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>