- node and acl estimates now use elapsed time
- added estimated time to finish for content index based on elapsed time
- time now include query, tracking loop, index commit and index warming amortized per unit of work (node, acl or content)
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@89643 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261