* Generate md5sum of ISO if using class 'RELEASE'.
* Do not install package 'grml' via GRMLBASE because we want
to use grml-small in GRML_SMALL and GRML_MEDIUM.
* Generate md5sum of ISO if using class 'RELEASE'.
* Do not install package 'grml' via GRMLBASE because we want
to use grml-small in GRML_SMALL and GRML_MEDIUM.