(nxtitemp, trade_getitem, trade_desc, trade_check_item_ok, nxtitem,

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.

src/lib/commands/tend.c

@@ -47,7 +47,6 @@
 #include "nat.h"
 #include "land.h"
 #include "plane.h"
-#include "genitem.h"
 #include "commands.h"
 
 static void expose_ship(struct shpstr *s1, struct shpstr *s2);