DERBY-4729 add more information to the XACT_PROTOCOL_VIOLATION returned from sto
re.

When this error is reported it is often hard to reproduce, so adding
printing of internal state of the Transaction when it is hit.  Hopefully
this help in understanding what is going on when the error is hit.



git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/trunk@1471079 13f79535-47bb-0310-9956-ffa450edef68