77016: Merged PLATFORM1 (5.0/Cloud) to HEAD-BUG-FIX (5.0/Cloud) 71478: ACE-1705: SOLR 4 - Core admin handler and start core tracking - Thinned down Tracker API. Made methods private where possible git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@77855 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261