Finish the changeable iconset

src/unix/unix.c

@@ -51,6 +51,7 @@ SDL_threadID eventthread;
 static int exit_event = 0;
 static int fullscreen_pending = 0;
 uint32_t lang_id = 0x0409, lang_sys = 0x0409; // Multilangual UI variables, for now all set to LCID of en-US
+char  icon_set[256] = "";  /* name of the iconset to be used */ 
 
 static const uint16_t sdl_to_xt[0x200] =
 {
@@ -1244,6 +1245,30 @@ plat_language_code_r(uint32_t lcid, char* outbuf, int len)
     return;
 }
 
+void 
+plat_clear_icon_set()
+{
+	return;
+}
+
+void
+plat_system_icon_set()
+{
+	return;
+}
+
+void 
+plat_load_icon_set()
+{
+	return;
+}
+
+void
+plat_get_icons_path(char* path_root)
+{
+	return;
+}
+
 
 void joystick_init(void) {}
 void joystick_close(void) {}