generated from pycrc. The command line used to generate the file is in
epan/crc/Makefile.common. I used "plain" to distinguish it from CCITT,
USB, and other 16-bit CRCs. Integrate the new CRC code into our
infrastructure.
Add crc16_plain_tvb_offset() to epan/crc16.[ch] and use it in
plugins/profinet/packet-pn-rt.c. This _should_ work correctly, but
hasn't been tested.
svn path=/trunk/; revision=27790
