redirect make output (pdfs, logs, etc.) to new subdirectory, out/

[chrissprague]

right now make works perfectly fine but it drops everything resulting from the make right into the directory that holds all our .tex files and Makefile etc.

For the purpose of organization, it would help a lot if the make file could instead drop this stuff into subdirectories to help categorize the stuff, e.g.

....141/ ........code/ ........questions/ ........out/

---

bonus points for

....141/ ........code/ ........questions/ ........out/ ............pdf/ ............logs/

[chrissprague]

done @ https://github.com/rit-csc/csc_exam_reviews/commit/60b8fc15e0e648bbd34647fb388810cfd614dccc