HBASE-11960 Provide a sample to show how to use Thrift client authentication
HBASE-12021 Hbase shell does not respect the HBASE_OPTS set by the user in console (Ashish Singhi)
HBASE-12023 HRegion.applyFamilyMapToMemstore creates too many iterator objects. (Vladimir Rodionov)
HBASE-12023 addendum