Switch to compressed backups.
Change log message at start of execution not to say "OK" but say "exec"

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1438589 13f79535-47bb-0310-9956-ffa450edef68
typo

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1438590 13f79535-47bb-0310-9956-ffa450edef68