Fix to query so that OpenSearch People search finds some useful results and doesn't potentially throw exception when certain characters are passed to the query - ETWONINE-7. git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@11255 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261