HBASE-7212 Globally Barriered Procedure Mechanism



git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/hbase-7290@1445818 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7459 NPE in HMaster TestLocalHBaseCluster



git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/hbase-7290@1445820 13f79535-47bb-0310-9956-ffa450edef68