CGAL_DISABLE_RECENTLY_ADDED_STATIC_FILTERS was misleading because
of... "recently"! What would mean that macro in several months?
I have changed it to CGAL_DISABLE_STATIC_FILTERS_ADDED_2011. As a matter of
fact, only GeometryFactory has added static filters to the CGAL kernel
during year 2011, and it was only the filters added November/December:
Is_degenerate_3 -- only for Ray_3 and Segment_3
Do_intersect_3 -- only for BBox_3-Ray_3 and BBox_3-Segment_3
Angle_3 -- only the operator()(Point_3, Point_3, Point_3)