* 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.
- * Do not exit if cleanup of /root directory in 98-clean-chroot fails.
+ * Remove and recreate /root directory in 98-clean-chroot.
* Skip stage updatebase when using softupdate and handle upgrade
on our own via hooks.
* Execute removal of log files after sourcing config files.