Does not appear to update list of attached devices On Mac OSX10.9 after first enumeration

[luciodj]

I have built the latest revision from source on OSX 10.9 receiving only a couple of warnings for unused functions. The code seems to work mostly but only if a HID device is present when the first enumeration is requested. It appears that the only way to "notice" new devices attached to the bus is to kill the current python process and run the application in a new one.
Also some of the strings (manufacturer, device description) appear to be truncated...