Bumping libfreenect to the most recent version (0.6.4 in the time of writing)

[morisil]

The current version of libfreenect in javacpp is quite outdated. I spotted some bug fixes in the most recent version which would help me a lot with particular kinect devices. I was trying to update the libfreenect to the latest version today, and it built correctly on my Linux machine, however I spotted that there are Windows and MacOs specific patches targeting the current version used by javacpp. I have no capacity to review and upgrade these patches at the moment :(

[saudet]

If it works without the patches, you don't need to worry about them.