new: chainOrderOK, get_chainOrder, set_chainOrder_wrong, clear_lastData
reverse_polygon_chain: QueryStructure -> PolygonData
normalize_segment_orientation: QueryStructure -> Trapezoider
removed: QueryStructure.segListArray, getSegListArray
renamed: chainOrderOK -> PolyLeftArr, get_ChainOrder -> get_PolyLeftArr,
set_chainOrder_wrong -> set_PolyLeft_wrong
additional tests for PolyLeftArr in EarClipTriangulatorTest,
TrapezoiderTest
Revision 1.1: new get_PolyLeftArr() for polygon chain winding order information after triangulation