[Freeciv-Dev] [patch rfd] loading rulesets

["Per I. Mathisen" <Per.Inge.Mathisen@xxxxxxxxxxx>]

This patch is for getting access to ruleset info during pre-game, as
discussed earlier in this thread.

It moves the loading of rulesets from start of game to before pre-game, ie
to server initialization. I also removed the entirely unnecessary
"feature" that allowed you to mix ruleset files from different modpacks in
the same game. Now you just feed civserver with a modpack directory
through the "--config DIR" option, and you cannot use "set techs FILE"
anymore. Lastly, I killed data/classic/, since I really couldn't bother to
code around this ancient backwards compatibility hack.

This also has three side benefits:
 - rules out a class of possible inconsistencies stemming from mixing
incompatible ruleset files (they are incompatible more often than not)
 - ruleset errors are detected before you start the game, which means
before you invite all your friends into the game...
 - no more "set techs 3" server crashes

Also, it simplies the code a bit. Adds 69 lines and removes 809... :)

Yours,
Per

"What we anticipate seldom occurs: but what we least expect generally
happens." -- Benjamin Disraeli

rulesetloading1.patch
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