We try to map the console framebuffer through wsdisplay. It seems to work,
but we still need to _see_ something.
XXX Framebuffer size discovery is borken.
+ In ioframebuffer and iohidsystem:
More methods and more debug for io_connect_method_*
+ A few new IOKit mach traps.
Darwin specific files. The handler does nothing yet.
This needs some improvement. Darwin attaches an IOHIDSystem device to
each human-interface device in the tree: mouse, keyboard, and a few others.
For now we only emulate one IOHIDSystem device.
