We only know if it is 64 by this point by the name.  Provisioning is done after host creation so we do not have the ability to run commands at this point.  I felt that it was best to continue with the style of the other settings that use 'cygpath', but instead run a quick shell command to determine the correct Program Files directory.

In future, we should consider shifting more of these options elsewhere, I do not feel that they belong here.