OAK-1454: Warn on huge multi-valued properties
Add benchmark for adding multi valued properties

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1579285 13f79535-47bb-0310-9956-ffa450edef68
OAK-1454: Warn on huge multi-valued properties
Log a warning when there are more than 1000 values on a multi valued properties

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1579286 13f79535-47bb-0310-9956-ffa450edef68