To certify these books, simply execute make in a Unix shell.  Or, use the
dependencies in Makefile to certify individually.  If you desire clarification,
please write to Matt Kaufmann, kaufmann@cs.utexas.edu.  The solutions are
organized as follows.

 Exercises 6.1 - 6.4:  partition-defuns.lisp

 Exercise 6.5:         partitionp-make-partition.lisp

 Exercise 6.6:         mesh-make-partition.lisp.

 Exercise 6.7:         mesh-append.lisp

 Exercise 6.8:         riemann-rcfn-helpers.lisp