patch 7.4.1995

Problem:    GUI: cursor drawn in wrong place if a timer callback causes a
            screen update. (David Samvelyan)
Solution:   Also redraw the cursor when it's blinking and on.

src/gui_gtk_x11.c

@@ -818,6 +818,12 @@ gui_mch_is_blinking(void)
     return blink_state != BLINK_NONE;
 }
 
+    int
+gui_mch_is_blink_off(void)
+{
+    return blink_state == BLINK_OFF;
+}
+
     void
 gui_mch_set_blinking(long waittime, long on, long off)
 {