Declare w_food after trying to load i_food in Interface::minister_foor().
Change forest symbol to ; so that all terrain is punctuation.
Add Building::wages, the amount we owe per day to each worker (measured in 1/10th of a gold).  Change minerals_mined to be a std::vector<Mineral_amount> - we'll use it like crops_grown.
Set wages for several buildings.
citizen_idle_income() returns the amount of income that 100 unemployed citizens of a given class earn per day.
Citizens tracks its own type, and has a new function get_income().  New City functions: get_total_maintenance(), get_total_wages(), get_military_expense() (UNFINISHED), get_taxes(), get_corruption_percentage() (UNWRITTEN), get_mine_production(), and get_minerals_mined().  int tax_rate[CIT_MAX] added to City.
A good starting effort on Interface::minister_finance().
Several tweaks and a few renamed fields.