HBASE-9428 Regex filters are at least an order of magnitude slower since 0.94.3

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HBASE-9432 Backport HBASE-8781 to 0.94 (Anoop)

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HBASE-9429 Add back MetaScanner.allTableRegions(Configuration conf,byte[] tablename,boolean offlined) method

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HBASE-8930 Filter evaluates KVs outside requested columns (Vasu Mariyala)

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