Revision 566878

HADOOP-1709 Make HRegionInterface more like that of HTable
HADOOP-1725 Client find of table regions should not include offlined, split parents

Changes:

New class MapWritable replaces KeyedData and KeyedDataArrayWritable

HBaseAdmin, HConnectionManager, HMaster, HRegionInterface,
HRegionServer, HTable, TestScanner2:
- getRow returns MapWritable instead of array of KeyedData
- next returns MapWritable instead of array of KeyedData

GroupingTableMap, IdentityTableMap, IdentityTableReduce,
TableInputFormat, TableMap, TableOutputCollector, TableOutputFormat,
TestTableMapReduce:
- use MapWritable instead of KeyedData and KeyedDataArrayWritable