C++ code from the article
"Intersecting Parametric Cubic Curves by Midpoint Subdivision"
by R. Victor Klassen, klassen.wbst128@xerox.com
in "Graphics Gems IV", Academic Press, 1994

files:
    Bezier.cc	- C++ source for cubic Bezier curve intersection
    Bezier.h	- header file for "
    makefile
    test.cc	- test program that prints out Postscript of curve intersection
    testout.ps	- color Postscript output of test program
    vector.h	- floating point vector library
