updated for version 7.4.487

Problem:    ":sign jump" may use another window even though the file is
            already edited in the current window.
Solution:   First check if the file is in the current window. (James McCoy)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    487,
 /**/
     486,
 /**/