Bug#745453: [libgcrypt20] Non free RFC

[Simon Josefsson]

Two comments:

1) Looking at crc.c, I don't think the code in question is big enough to
   be copyrightable.  The FSF usually uses a 10-line limit, and my
   impression is that they are intentionally conservative here.  The
   code is a couple of lines only.

2) Code from some RFCs is available under the BSD license or for
   smaller snippets, under fair use, via the IETF Trust.  See
   http://trustee.ietf.org/faq.html

/Simon