Improvements and simplifications to ACL V2 for the Java Broker:
1) Removed 'EXECUTE' operation (we now just have ACCESS and UPDATE like C++ broker)
2) Enable users with management rights for a procedure to complete that procedure without matching AMQP rights (configurable)
3) Fix up system tests (make clearer, remove need for lots of support files)
4) Fix disparity in DENY_LOG and DENY-LOG values between brokers.
5) Remove transitive/expand configuration operations