svn merge svn://svn.alfresco.com:3691/alfresco/BRANCHES/DEV/EXTENSIONS@4843 svn://svn.alfresco.com:3691/alfresco/BRANCHES/DEV/EXTENSIONS@4848 .
Allow null in setAuthentication
Patch for system registry area
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@4953 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261