patch 8.2.5059: autoconf 2.71 produces many obsolete warnings

Problem:    Autoconf 2.71 produces many obsolete warnings.
Solution:   Replace obsolete macros with non-obsolete ones, where the
            functionality does not change. (issue #10528)
diff --git a/src/version.c b/src/version.c
index 744fad6..2919609 100644
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    5059,
+/**/
     5058,
 /**/
     5057,