Changes necessary to run minidoop from metadl (still using the souffle evaluator)
- add -SEP command line option to be able to configure the CSV separator (Doop facts use \t)
- minor fixes to be able to accept CSV values starting with '
- add a "make minidoop" target
(The output of the translated minidoop differs from the original minidoop, so I must have introduced a bug while translating...)