Looking for some review on a complex set of ports (schilytools)

Good day!

I've spent the last two weeks adding ports for Jörg Schilling's
schilytools.  This affects some popular packages like cdrtools and
star.  Here is a differential revision, it's a bit large and complex
and I'd appreciate to get some feedback on it.

    https://reviews.freebsd.org/D30669
    https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256467

Yours,
Robert Clausecker

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