Windows Vista build 5284 (vbl media ehome)

Build leaked 2016-12-19. Includes new volume control and network icons, and notably a custom installer, allowing user to choose between Home Premium and Ultimate. The $OEM$ folder in the /sources folder must be deleted or setup will fail with an "An error occurred while copying privates" message. It is also the last build to have at least 1 reference to Longhorn.