Multiple -sg and -sn Commandline Parameters - Step 7

Remaining changes to TestRegistry.

Not found the cause of the segfaulting yet. There seems to be a problem that causes usage to be printed when the command line is too long (?) but maybe there was a syntax error hidden somewhere. Still investigating.

It behaves as I intended from the command line, but not from within Eclipse. Need to work with @tcmak to find out what's amiss.