HBASE-7467 CleanerChore checkAndDeleteDirectory not deleting empty directories (Jean-Marc and Jesse Yates)



git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1427287 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7299 TestMultiParallel fails intermittently in trunk builds, addendum



git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1427289 13f79535-47bb-0310-9956-ffa450edef68