20120410 release now available

Written for KVM Guest Drivers for Windows by Al Stone on 2012-07-11

Build has been updated to be in sync with upstream source as of 2012-04-10 (it takes a while to get the signing done right). The biggest changes are to the network driver (HW checksum offload, debug cleanup, queue handling and power management), and the storage driver which includes a new vioscsi device. Apart from that, there's been quite a bit of clean up, as well (white space, licensing files).