HBASE-7921. TestHFileBlock.testGzipCompression should ignore the block checksum

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HBASE-5472 LoadIncrementalHFiles loops forever if the target table misses a CF -- REVERT FROM BRANCH

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HBASE-5472 LoadIncrementalHFiles loops forever if the target table misses a CF -- REAPPLY

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HBASE-7579 HTableDescriptor equals method fails if results are returned in a different order -- REVERT

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