OAK-2174 Non-blocking reindexing doesn't finish properly  - clarified reindex approaches
OAK-2174 Non-blocking reindexing doesn't finish properly
 - clarified reindex approaches

git-svn-id: 67138be12999c61558c3dd34328380c8e4523e73@1630805 13f79535-47bb-0310-9956-ffa450edef68

davidegiannella/jackrabbit-oak,davidegiannella/jackrabbit-oak,davidegiannella/jackrabbit-oak,davidegiannella/jackrabbit-oak,davidegiannella/jackrabbit-oak