HBASE-11753 Document HBASE_SHELL_OPTS environment variable (Misty Stanley-Jones)
HBASE-11757 Provide a common base abstract class for both RegionObserver and MasterObserver
HBASE-11734 Document changed behavior of hbase.hstore.time.to.purge.deletes (Misty Stanley-Jones)
HBASE-11508 Document changes to IPC config parameters from HBASE-11492 (Misty Stanley-Jones)
HBASE-11754 [Shell] Record table property SPLITS_FILE in descriptor (chendihao)
HBASE-11773 Wrong field used for protobuf construction in RegionStates (Andrey Stepachev)