HBASE-7066 Some HMaster coprocessor exceptions are being swallowed in try catch blocks - Revert



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Merge remote branch 'origin/0.95' into 0.95-gd
HBASE-8272 make compaction checker frequency configurable per table/cf; ADDENDUM

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HBASE-8483 HConnectionManager can leak ZooKeeper connections when using deleteStaleConnection

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Merge remote branch 'origin/0.95' into 0.95-gd
Merge remote branch 'origin/0.95-gd' into fb-YAHOO-313-0.95-gd