Patch that enables home button support in XDAndroid

[[ACL]]

I should have gotten involved sooner i suppose but it's unclear why we need this. To fork off just for buttons?

i hear some brains thinking ... We can probably make the whole thing dynamic.. Now just need to see how the xdandroid team feels about that. Kernle wise we can make the damn phone sing, but this is more of a userland thing in my eyes.

We talked about enabling the zoombar to do more. Any ideas what we can use it for?