Apply requested changes

- Remove icon functions from plat.h.
- Fix some indentation problems.
- Remove unused parameter from win_stbar.c
- Rename win_lang.c to win_progsett.c
- Remove stub functions from unix.c
- Move win_load_icon_set() to ui_init()
- Replace the translated texts to English, and let the translators translate them
- Fix the control IDs in dialogs.rc.
- Use the requested solution in win_icon.c for setting the array variables.

src/include/86box/win.h

@@ -107,7 +107,7 @@ extern HWND		hwndMain,
 			hwndRender;
 extern HANDLE		ghMutex;
 extern HICON		hIcon[256];
-extern int dpi;
+extern int		dpi;
 extern RECT		oldclip;
 extern int		sbar_height, user_resize;
 extern int		acp_utf8;
@@ -149,6 +149,11 @@ extern int      win_get_system_metrics(int i, int dpi);
 
 extern LPARAM	win_get_string(int id);
 
+extern void     win_clear_icon_set();
+extern void     win_system_icon_set();
+extern void     win_load_icon_set();
+extern void     win_get_icons_path(char* path_root);
+
 extern intptr_t	fdd_type_to_icon(int type);
 
 #ifdef EMU_DEVICE_H