适配fieldstat3新接口(节约10%); 减少strlen的调用(节约2%); 优化栈变量的初始化(节约1%)，累计节约13%CPU

src/tsg_entry.h

@@ -81,11 +81,19 @@ struct app_id_dict
 	int continue_scanning;
 	unsigned short tcp_timeout;
 	unsigned short udp_timeout;
+	unsigned short app_name_len;
+	unsigned short parent_app_name_len;
+	char risk_len;
+	char category_len;
+	char subcategory_len;
+	char technology_len;
+	char characteristics_len;
+	char padding[3];
 	int tcp_time_wait;
 	int tcp_half_close;
-	char *risk;
 	char *app_name;
 	char *parent_app_name;
+	char *risk;
 	char *category;
 	char *subcategory;
 	char *technology;