HBASE-9958 Remove some array copy, change lock scope in locateRegion

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1541688 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9907 Rig to fake a cluster so can profile client behaviors

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1541703 13f79535-47bb-0310-9956-ffa450edef68