Accidentally the options fix that replaced . with / for the command line -i -x options
caused dependencies to packages with at least one dot (.) in their name, to fail.

The tests did not check for such packages. Thus the tests should be updated to use packages with at least one dot (.) and the fix is simple. To really support arbitrary UTF8 directory names, possibly containing both slashes (shudder) and/or dots, will require more work, if it is deemed necessary. However, this fix is needed to get dependency tracking back online.