new file:   include/model_han_grave_db.hrl
	modified:   log/gate.log
	modified:   src/db_modules/mod_role_han_grave_db.erl
	modified:   src/game_module/who_is_undercover.erl
	modified:   src/mysql_module/mysql/mysql_conn.erl
	modified:   src/util/time_util.erl