ACCUMULO-1030 clean up the directories left from any previous runs
ACCUMULO-1572 ignore connection lost; eventually we'll get an session lost event
Merge branch '1.5.1-SNAPSHOT'
ACCUMULO-1572 integration test
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/accumulo
ACCUMULO-1577 committing Michael Berman's patch
ACCUMULO-1579 Fix classpath issues and add plugin test with iterator