151452: More efficient equals and hashCode implementations in TxState
These methods have been implemented in a more efficient manner which should improve performance.
151459: Improve TransactionInProgressException throwing for JMS
We no longer fill in the nested stack trace when throwing this exception, which should optimise performance with Spring message listener contains.
151842: Unnecessary ClassNotFoundExceptions thrown during proxy creation
We've optimised the creating of proxy objects by smarter class loading.
151916: Avoid unnecessary isSameRM calls on the XAResource
We now try to avoid isSameRM calls when possible.