HBASE-8559 increase unit-test coverage of package org.apache.hadoop.hbase.coprocessor



git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1537741 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9867 Save on array copies with a subclass of LiteralByteString

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1537750 13f79535-47bb-0310-9956-ffa450edef68