Fix update due to change of Intuos packaging

* Intuos driver package does not appear to report the
  actual version number of the release (Munki reports
  v0 or v0.0)
* Added regex to try to determine/pull version information
  from download URL
* Updated minimum_os_version which now is 10.8
* Added additional_pkginfo to *.munki.recipe to properly
  use %version% var determined in *.download.recipe