Add vSphere support

What are we crediting here? vijava or something else? Also, as far as I can see we will not be _bundling_ vijava or other VMware software in the distribution, and the [Apache guidelines](http://www.apache.org/dev/licensing-howto.html) state:

"(DO NOT modify LICENSE or NOTICE for dependencies whose bits are not bundled.)"

So I'm not sure this is appropriate?