Toby's playlist stylesheet, version 2

Here's version two of my playlist stylesheet, for printing the contents of our players.

Changes since v1:

• Supports a new value, "time" for the print attribute. This differs from "summary" in that it shows a total duration of the non-hidden tracks instead of a count. I like this for audio books.
• Support for page numbers. This helps when assembling the booklet.
• Support for a datestamp at the end (or on the front page if using page numbers), so you know which one is newest and which one to throw away.

I've improved the makefile, too:

• Supports the new page-number and datestamp features of the stylesheet.
• Supports JadeTeX and uses it by default if available.

As a tarball containing both (this is what I'll upload to RioCar.Org).