HBASE-8272 make compaction checker frequency configurable per table/cf; ADDENDUM

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1480003 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8483 HConnectionManager can leak ZooKeeper connections when using deleteStaleConnection

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1480010 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-YAHOO-311-trunk-gd