First part of the overhaul of ServerHitBin class: now ServerHitBin objects are thread-safe; however the ServerHitBin class isn't because of its static maps (more work is needed in order to fix this).


git-svn-id: https://svn.apache.org/repos/asf/ofbiz/trunk@1620907 13f79535-47bb-0310-9956-ffa450edef68