- moved __checkType function into the global space (checkType)
- fixed checkType function and set an isolinux compliant
  bootloader if the user requested a hybrid setup for any
  other than the iso image type
- make sure checkType is also called in KIWIBoot because this
  module reads the image description again from scratch which
  is needed to support postprocessing modes e.g --bootvm
- DB: fixed opensusePattern vs. namedCollection
- DB: rebuild documentation