OAK-2230: Execution Stats for async indexing
Added resettable consolidated execution stats
TimeSeries for trends

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1635058 13f79535-47bb-0310-9956-ffa450edef68
OAK-2128:  Scalability benchmarks for search
Logging execution stats introduced in OAK-2230

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1635059 13f79535-47bb-0310-9956-ffa450edef68
OAK-2196: Implement sorting based on Lucene sorting
For ordered fields try conversion to defined type from the actual type if different and log warning and ignore if conversion fails.

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1635060 13f79535-47bb-0310-9956-ffa450edef68