HBASE-7992 provide pre/post region offline hooks for HMaster.offlineRegion() (Rajeshbabu)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1458329 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8135 Mutation should implement HeapSize

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1458421 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8138 Using [packed=true] for repeated field of primitive numeric types (types which use the varint, 32-bit, or 64-bit wire types)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1458505 13f79535-47bb-0310-9956-ffa450edef68