Fix dependency of header files.

examples/file_server/file_socket.cpp

 
-#if defined(__MINGW32__) || defined(__MINGW64__) //who can tell me why?
-#include <iostream>
-#endif
-
 //configuration
 #define ASCS_SERVER_PORT		5050
 #define ASCS_RESTORE_OBJECT

include/ascs/executor.h

@@ -13,6 +13,8 @@
 #ifndef _ASCS_EXECUTOR_H_
 #define _ASCS_EXECUTOR_H_
 
+#include <functional>
+
 #include <asio.hpp>
 
 #include "config.h"

include/ascs/object_pool.h

@@ -16,8 +16,8 @@
 
 #include <unordered_map>
 
-#include "timer.h"
 #include "executor.h"
+#include "timer.h"
 #include "container.h"
 #include "service_pump.h"
 

include/ascs/socket.h

@@ -13,8 +13,8 @@
 #ifndef _ASCS_SOCKET_H_
 #define _ASCS_SOCKET_H_
 
-#include "timer.h"
 #include "tracked_executor.h"
+#include "timer.h"
 
 namespace ascs
 {