General build system, etc., improvements

There are a few miscellaneous updates to improve the Makefile. Plus I added PDF document info (like Title, Author, and Subject) using the hyperref package, so that the product PDF has a nice title in the title bar as well as some info in the PDF "properties" window.

Let me know if you'd prefer to unwind the merge structure (I already merged your tip into mine).

BTW, I recently completed my M.S. thesis using this template. Thanks for keeping it maintained!