Enable cultural victory by default in experimental ruleset
(Was originally gna patch #8034 ; this version takes civ2civ3 out of scope.)
The civ2civ3 and experimental ruleset both allow culture victory (since they have effects allowing nonzero culture), but it's disabled by default.
Probably it would be better to enable it in [settings].
If no-one objects or gets there first I'll do this.
I added culture effects to civ2civ3 for testing purposes, but they are not properly balanced to enable a culture victory.
I think it would be too easy to win against the AI this way.
My idea was to use the culture to affect other minor effetcs like:
Civil_War_Chance, Spy_Resistant, Unit_Bribe_Cost_Pct, Incite_Cost_Pct.
I'll see if there are other effects available in latest freeciv version.