Add a way to say "use any resource except A".  For example, to run
allow the use of any resource except bsddb, give the option
"-uall,-bsddb".
diff --git a/Misc/NEWS b/Misc/NEWS
index 248382c..89303ba 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -823,7 +823,9 @@
 Tests
 -----
 
-Yet to be written.
+- The regrtest.py script's -u option now provides a way to say "allow
+  all resources except this one."  For example, to allow everything
+  except bsddb, give the option '-uall,-bsddb'.
 
 Windows
 -------