Performance improvement for slow graphic systems: avoid lag on X11 (Issue 405,269)

git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@1780 416bcca6-2ee7-4201-b75f-2eb2f807beb1

src/sdlscreen.h

@@ -44,6 +44,8 @@ byte* Screen_pixels;
 
 void Update_rect(short x, short y, unsigned short width, unsigned short height);
 void Flush_update(void);
+void Update_status_line(short char_pos, short width);
+
 ///
 /// Converts a SDL_Surface (indexed colors or RGB) into an array of bytes
 /// (indexed colors).