Add changelog entry about xserver-xorg-video-rendition.

debian/changelog

@@ -6,6 +6,12 @@ tails (0.17.1) unstable; urgency=low
   * Hardware support
   - Update Linux to 3.2.39-2.
     It includes the drm and agp subsystems from Linux 3.4.29.
+  - Don't install xserver-xorg-video-rendition backport.
+    xserver-xorg-video-rendition has been removed from squeeze-backports
+    due to an upstream tarball mismatch discover when merging backports
+    into the main Debian archive, and xserver-xorg-video-all still depends
+    on it, so we explicitly install all drivers from -all but -rendition
+    as a (hopefully temporary) workaround.
 
   * Minor improvements
   - Remove Indymedia IRC account, until we ship a version of Pidgin