HBASE-8135 Mutation should implement HeapSize

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1458418 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/trunk@1458504 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8035 Add site target check to precommit tests -- ADDENDUM

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1458507 13f79535-47bb-0310-9956-ffa450edef68