monster gender-related follow-ups

remove unintentionally left M2_MALE flag on dwarf lord/lady/leader

provide a way to verify gender information relayed from the core
in debug mode on tty via #wizmgender debugging extended command

include/extern.h

@@ -295,6 +295,7 @@ E void NDECL(sokoban_detect);
 E void NDECL(dump_map);
 #endif
 E void FDECL(reveal_terrain, (int, int));
+E int NDECL(wiz_mgender);
 
 /* ### dig.c ### */