Amend HBASE-11251 Attempt grants during tests only when security is enabled
HBASE-11253 IntegrationTestWithCellVisibilityLoadAndVerify failing since HBASE-10326 (Anoop Sam John)
HBASE-11096 stop method of Master and RegionServer coprocessor is not invoked (Qiang Tian)
Update CHANGES.txt for 0.98.3RC1
HBASE-11234 FastDiffDeltaEncoder#getFirstKeyInBlock returns wrong result
HBASE-11255 Negative request num in region load (Liu Shaohui)
HBASE-10692 The Multi TableMap job don't support the security HBase cluster (Liu Shaohui)