HBASE-7628 Port HBASE-6509 fast-forwarding FuzzyRowFilter to 0.94 (Anoop)



git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1438114 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7647 0.94 hfiles v2.1 are not backwards compatible with HFilev2.0

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1438175 13f79535-47bb-0310-9956-ffa450edef68