HBASE-12095 SecureWALCellCodec should handle the case where encryption is disabled
HBASE-12124 Closed region could stay closed if master stops at bad time
HBASE-12139 StochasticLoadBalancer doesn't work on large lightly loaded clusters

Summary:
Currently the move cost overshadows the skew cost on a large cluster. This can render the split policy worse than useless
and it can trap meta on the most loaded server in the cluster.

Test Plan:
Unit tests everywhere
likeaboss

Reviewers: stack, manukranthk

Subscribers: tedyu

Differential Revision: https://reviews.facebook.net/D24285
HBASE-12144 Backport HBASE-10141 'instead of putting expired store files thru compaction, just archive them' to 0.98
HBASE-12065 Import tool is not restoring multiple DeleteFamily markers of a row (Maddineni Sukumar)
HBASE-12078 Missing Data when scanning using PREFIX_TREE DATA-BLOCK-ENCODING

Signed-off-by: Andrew Purtell <apurtell@apache.org>
HBASE-12120 HBase shell doesn't allow deleting of a cell by user with W-only permissions to it (Srikanth Srungarapu)