Added line about awlc-listings.
Removed some cruft hanging over from mathspec, broke out some CATAM-specific and lstlistings commands into their own style files.
Removed mathspec

I completely removed the dependency on mathspec, and custom fonts, since I wasn’t using it, and plan to remove it from any files that still call it.

This involved ripping out all of the mathspec-specific code, and making a few changes to section heading commands to use sans serif fonts. (This was previously handled by mathspec.)

I also made some minor changes to page headers.