[Bmi776] more exam stuff

[Mark Craven]

On the "Homework Assignments..." part of the course web site,
I've added a link a page of practice questions and a link to
the last 576 final exam I gave.  I'll add more practice questions
tomorrow.  Most of questions on the 576 exam pertain to topics
we didn't cover in 776.  Questions 3 and 4 are notable exceptions,
however.  You should consider these as additional practice questions.

Mark