HBASE-9956 Remove keyLength cache from KeyValue

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1541314 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9894 remove the inappropriate assert statement in Store.getSplitPoint() (Liang Xie)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1541321 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9138 getHaseIntegrationTestingUtility() is misspelled

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1541325 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/0.94' into 0.94-gd
Merge remote branch 'origin/0.94-gd' into fb-HBASE-8553-0.94-gd