group user_owner clause as "AND (... OR .... OR ....)" to handle multiple pathquery <owner> elements. http://bugzilla.ecoinformatics.org/show_bug.cgi?id=5880
group user_owner clause as "AND (... OR .... OR ....)" to handle multiple pathquery <owner> elements. http://bugzilla.ecoinformatics.org/show_bug.cgi?id=5880