HBASE-8548  postOpen hook called twice

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1508897 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9034 hbase-daemon.sh swallows start up errors -- ADD

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1508945 13f79535-47bb-0310-9956-ffa450edef68