HBASE-9990 HTable uses the conf for each call creation

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1572522 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10080 Unnecessary call to locateRegion when creating an HTable instance

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1572525 13f79535-47bb-0310-9956-ffa450edef68