(gamestr, EF_GAME, game_ca): New.
(empfile): Declare the table.
(ef_open_srv, ef_close_srv): Open and close it.
(main): Create it.
(empobj_storage): New member game.
(EF_DYNMAX): New.
(EF_IS_GAME_STATE): Use it.
(emp_obj_chr_name): New. Returns a pointer to the characteristics name
for an empobj.
(unit_map): Simplify unit_map() by using get_empobjp() and
emp_obj_chr_name().
(map, cmd_move_map): Switch to EF_SHIP as unit_map does not default
to EF_SHIP for EF_BAD anymore.
(get_empobj_chr): New. Get characteristics for empobj.
(mission, build_mission_list_type): Switch to use new
functions put_empobj() and get_empobj_chr().
other. Ensure headers in include/ can be included in any order
(except for econfig-spec.h, which is special). New header types.h to
help avoid inclusion cycles. Sort include directives. Remove some
superflous includes.
oprange, show_mission, nameofitem, build_mission_list_type,
unit_map, xdvisible, trdswitchown, ontradingblock, trad, check_trade,
unit_type_name, start_stop_unit, scut, scra, mission, multifire,
perform_mission, fuel, NSC_GENITEM): Replace struct genitem with
struct empobj. Remove genitem.h and create a new file empobj.h.
Replace multiple instances of unions of ef_type structures with
one standard union empobj_storage which is a superset of the individual
instances.