+PH/09 Applied a patch from the Sieve maintainer which:
+
+ o fixes some comments
+ o adds the (disabled) notify extension core
+ o adds some debug output for the result of if/elsif tests
+ o points to the current vacation draft in the documentation
+ and documents the missing references header update
+
+ and most important:
+
+ o fixes a bug in processing the envelope test (when testing
+ multiple envelope elements, the last element determinted the
+ result)
+