Added a test for CocoaGlk per http://inform7.com/mantis/view.php?id=1189#c2425.
Code cleanup and comments on CocoaGlk detection.
Moved the detect CocoaGlk rule to the more sensible Glulx zeroing-reference rulebook, where it will also test for CocoaGlk after a restore.
Merge pull request #242 from EmacsUser/master

Added a test for CocoaGlk