* DevNotes: Add entry cgf-000026.

* fhandler.h (fhandler_console::save_top): Save top of screen coordinates.
* fhandler_console.cc (dev::save_restore): Record top of screen coordinates.
Clear entire buffer when restoring saved buffer and try to position the cursor
on the save relative place on the screen.

winsup/cygwin/fhandler.h

@@ -1302,6 +1302,7 @@ class dev_console
   COORD save_bufsize;
   PCHAR_INFO save_buf;
   COORD save_cursor;
+  SHORT save_top;
 
   COORD dwLastCursorPosition;
   COORD dwMousePosition;	/* scroll-adjusted coord of mouse event */