Virtual Box update.

[David Hutchins]

Okay, I just went to upgrade to VirtualBox 4.0 and quickly found out that
vbox.pm will not work with 4.0+, after updating code to try to make it work
I encountered a bug in the new media registry where multiaccess disks get
read-locked and actually completely prevent multiaccess.... :(
http://www.virtualbox.org/wiki/Download_Old_Builds_3_2 was the last version
that works correctly..