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

backported change #1471079 from trunk to 10.8 branch.

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/branches/10.8@1476278 13f79535-47bb-0310-9956-ffa450edef68