[zx] Magenta -> Zircon The Great Renaming is here! Change-Id: I3229bdeb2a3d0e40fb4db6fec8ca7d971fbffb94
[virtio] Create virtio ulib. This way we can share common structure and constant definitions between host and client side implementations. Change-Id: I565b9252e38a6d11c2df61efda649cb6ca6e246a