Merge version 3.9.0~b5-2+rpi1 and 3.9.0~rc1-1 to produce 3.9.0~rc1-1+rpi1

diff --cc debian/changelog
index 0f7a333d69b6af42cd8130b714a8e0d287e16d09,3c9322bd141cd8a9e4a25e9a7a3a8d2ac27aa0a6..652f571769a17f04e8cf68baefd3c7436011c49f
--- 1/debian/changelog
--- 2/debian/changelog
+++ b/debian/changelog
@@@ -1,8 -1,8 +1,15 @@@
- python3.9 (3.9.0~b5-2+rpi1) bullseye-staging; urgency=medium
++python3.9 (3.9.0~rc1-1+rpi1) bullseye-staging; urgency=medium
 +
++  [changes brought forward from 3.9.0~b5-2+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Thu, 30 Jul 2020 10:10:07 +0000]
 +  * Disable testsuite (test_concurrent_futures seems to hang)
 +
-  -- Peter Michael Green <plugwash@raspbian.org>  Thu, 30 Jul 2020 10:10:07 +0000
++ -- Raspbian forward porter <root@raspbian.org>  Sat, 12 Sep 2020 09:16:50 +0000
++
+ python3.9 (3.9.0~rc1-1) unstable; urgency=medium
+ 
+   * Python 3.9.0 release candidate 1.
+ 
+  -- Matthias Klose <doko@debian.org>  Wed, 12 Aug 2020 12:42:16 +0200
  
  python3.9 (3.9.0~b5-2) unstable; urgency=medium