- don't clear mouse button state when setting up USB packet (holding button   down has generated double-clicks) - fixed some comments
- don't clear mouse button state when setting up USB packet (holding button
  down has generated double-clicks)
- fixed some comments

marmolejo/bochs-zet,marmolejo/bochs-zet,marmolejo/bochs-zet,marmolejo/bochs-zet,marmolejo/bochs-zet