[5.2] c1c5069 Document removal of the s_req counter in 5.2.

[PÃ¥l Hermunn Johansen]

commit c1c5069d4bd4ad02acd8e00abf0de086683d4411
Author: Geoff Simmons <geoff at uplex.de>
Date:   Wed Sep 13 17:37:59 2017 +0200

    Document removal of the s_req counter in 5.2.

diff --git a/doc/sphinx/whats-new/upgrading-5.2.rst b/doc/sphinx/whats-new/upgrading-5.2.rst
index 03f4f2e..56c925b 100644
--- a/doc/sphinx/whats-new/upgrading-5.2.rst
+++ b/doc/sphinx/whats-new/upgrading-5.2.rst
@@ -139,6 +139,9 @@ Other changes
   * The ``type`` and ``ident`` fields have been removed from the XML
     and JSON output formats, see :ref:`varnishstat(1)`.
 
+  * The ``MAIN.s_req`` statistic has been removed, as it was identical
+    to ``MAIN.client_req``.
+
   * *XXX: anything else? stats added, removed or changed?*
 
 * ``varnishlog(1)``: