DERBY-6352; Access denied ("java.lang.RuntimePermission" "modifyThread") in store.RecoveryAfterBackup test
  Backport printing of additional info from trunk


git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/branches/10.10@1532175 13f79535-47bb-0310-9956-ffa450edef68