- fix was to ensure occurrences are sorted in QueryNode.cpp CQueryBinaryOperationNode::hits_and_positions_union(), hits_and_positions_intersection()
- not quite kosher in #separate mode; e.g. for input "a b1 b2 c" querying (a && b* #separate) finds only "__a__ _b1_ b2 c" and
not "__a__ b1 _b2_ c"