Bugfix with ofxKinect fixes bug where Kinect will not re-open if app cra...

Fixes bug where Kinect will not re-open if app crashes without shutting Kinect down. Requires latest libusb.
Closes #2968 

This fix requires libusb 1.0.12 or newer for linux. ping @arturoc  
The correct OS X libusb has been included with this PR.