- grubcd.efi has been moved to grub.efi in the latest grub2
  packages. Thus we have to follow the change
- make KIWIGlobals a singleton
  + eliminates another package variable in kiwi.pl
  + add the singleton to the doc
  + allows us to make the remainaing test cases packages, now critic 2 clean
- rename methods getGlobals and setGlobals
  + reflect in name the data that is being returned/set
    getKiwiConfig, setKiwiConfigData
- some general code consistency clean up
- fixed firmware check to allow uefi as well