Bug#864712: release-notes: Document possible QGIS upgrade failure

[Bas Couwenberg <sebastic@xs4all.nl>]

Package: release-notes
Severity: normal
Tags: patch

Dear Maintainer,

The jessie to stretch upgrade may fail due to a file conflict in the
QGIS packages as reported in #864695.

Because the fix cannot be included in stretch r0, the issue should be
documented in the release notes.

Please consider the attached patch.

Kind Regards,

Bas

Index: en/issues.dbk
===================================================================
--- en/issues.dbk	(revision 11636)
+++ en/issues.dbk	(working copy)
@@ -905,6 +905,16 @@
       do this transition.
     </para>
   </section>
+  <section id="qgis-upgrade-may-fail">
+    <title>QGIS upgrade may fail</title>
+    <para>
+      The upgrade of the
+      <systemitem role="package">python-qgis-common</systemitem>
+      package may fail due to a file conflict. To prevent the upgrade
+      failure remove the qgis packages before the upgrade and reinstall
+      them afterwards.
+    </para>
+  </section>
 </section>
 
 </chapter>