Small utility program to generate CRC tables in both C and Perl
formats. Note: we don't actually need a true CRC, which is what this
generates. We may want to consider going to a "generalized CRC",
meaning a randomly generated set of 8 bytewise permutations. These
have the advantage of not being linear, while having the same software
implementation as a true CRC.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>