Mention r.7391 in the Changelog: "Fix the block filter functions."

ChangeLog

@@ -35,6 +35,7 @@ New features:
   - Manual mapping of commands on specific devices is now possible
 
 Changes:
+  * Fix the block filter functions.
   * Fix StarPU-MPI on Darwin.
   * The FxT code can now be used on systems other than Linux.
   * Keep only one hashtable implementation common/uthash.h