HBASE-8471 Server-side, remove convertion from pb type to client type before we call method

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1485397 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8336 PooledHTable may be returned multiple times to the same pool

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1485401 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8596 [docs] Add docs about RegionServer "draining" mode


git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1485441 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/0.95' into 0.95-gd
Merge remote branch 'origin/0.95-gd' into fb-YAHOO-325-0.95-gd