Update HIDAPI (and account for change of enumeration semantics)

[rpavlik]

We'll want to update HIDAPI at some point - we already have to use a newer version for Android. The main catch I see is that there is a change in semantics on Windows (at least) of how enumeration works, so we'll have to handle that.

signal11/hidapi@e3ab121

[russell-taylor]

Enumeration is giving me trouble with the old version on a server we have at Aqueti, but it seems to be down in libusb on a particular device. Would be glad to try out various devices on Windows, Linux, and Mac with a new version if you'd like.

[ExpertSole]

This problem still affects me on 64 bit Linux. Enumeration is broken for me with your current version, but works fine if I substitute yours with a newer one.

[d235j]

This also is needed to improve stability on Mac OS X.