patch 8.1.0353: an "after" directory of a package is appended to 'rtp'

Problem:    An "after" directory of a package is appended to 'rtp', which
            will be after the user's "after" directory. ()
Solution:   Insert the package "after" directory before any other "after"
            directory in 'rtp'. (closes #3409)
diff --git a/src/version.c b/src/version.c
index 772acc9..840f288 100644
--- a/src/version.c
+++ b/src/version.c
@@ -795,6 +795,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    353,
+/**/
     352,
 /**/
     351,