- the controller type 'scsi' does not exist for VMware
  lsilogic and buslogic define scsi controllers. Thus
  use lsilogic as the default scsi controller
- Fixed misleading function names

  getInstallFailsafe -> getInstallProvideFailsafe
  setInstallFailsafe -> setInstallProvideFailsafe

  This is all about if a failsafe menu entry should be provided
  to the image boot configuration or not. Thus the function
  names should describe this and not lead to the assumption
  that one can select the failsafe entry from the boot menu
  which is actually done by the installboot="failsafe-install"
  attribute
- Fixed suseGFXBoot graphics boot setup with gfxboot-devel
  Because of the change which uses isolinux as loader for install
  ISO media and not the configured disk bootloader as eltorito
  alternative loader we need both boot graphics formats available
  the one for isolinux as well as the one for the selected system
  bootloader. The code in suseGFXBoot reflects this for the
  boot graphics provided by packages but not if the user provides
  a custom tarball for use with gfxboot-devel