patch 8.0.1489: there is no easy way to get the global directory

Problem:    There is no easy way to get the global directory, esp. if some
            windows have a local directory.
Solution:   Make getcwd(-1) return the global directory. (Andy Massimino,
            closes #2606)

src/version.c

@@ -771,6 +771,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1489,
 /**/
     1488,
 /**/