[Freeciv-Dev] Code Cleanups.

[Tony Stuckey <stuckey@xxxxxxxxxxxxxxxxx>]

        best_tile, best_food_tile, ai_calc_city_buy, city_get_defenders,
and city_get_buildings are all functions that could be #ifdef'd out.  They
are either called from code that is already ifdef'd out or are marked as
obsolete.  Someone check me on this.

        trade_between_cities and establish_trade_route use very different
formulas for calculating trade route values.  They should be rationalized
and most likely, establish_trade_route should simply call
trade_between_cities to get the value.
--
Anthony J. Stuckey                              stuckey@xxxxxxxxxxxxxxxxx
"When I was young, the sky was filled with stars.
 I watched them burn out one by one."  -Warren Zevon