Wasp Lisp 0.3 on Mac OS X Fixed

There is a bug in LibEvent on Mac OS X when using any I/O scheduling method more sophisticated than select(2); Wasp Lisp 0.3.2 provides support for Mac OS X by disabling the more efficient kqueue(2) and poll(2) I/O schedulers on that platform and that platform only. It's disappointing, really, and any Mac OS X aficionado is more than welcome to find a more satisfactory way to achieve this -- I only use OS X when under duress. :)