Intersection Testing Functions - CGAL::do_intersect()

Depending on which CGAL kernel is used, different overloads of this global function are available.

Modules
	CGAL::do_intersect() (2D/3D Linear Kernel)
	CGAL::do_intersect() (2D Circular Kernel)
	CGAL::do_intersect() (3D Spherical Kernel)