0026407: BRepMesh_Delaun should not take into account frontier edges on first pass...

0026407: BRepMesh_Delaun should not take into account frontier edges on first pass of algorithm

Correction of new vertices insertion: remove all triangles shot by point even if they contain frontier edges in order to prevent cases of free edge glued with frontier;
findNextPolygonLink: choose link with opposite direction to previous one as the last resort in case if the is no another option;
Enlarge bounding boxes by Precision::PConfusion() in order to not to miss possible intersections;
Return NoIntersection in case of end point touch and isConsiderEndPointTouch flag is not set.