[ipv6calc] Replacment of openssl/md5 and supporting of IEEE/iab.txt

Hi,

because of license issue, I've replaced the usage of openssl/md5 by a copy from coreutils package.

Also I've updated the databases and add support of IEEE/iab.txt for extended OUI information.

CVS is updated and you will find a current CVS snapshot tarball at:

ftp://ftp.bieringer.de/pub/linux/IPv6/ipv6calc/

Please try out and report any problems.

If there a no problem reports in the next days, I will release version 0.48 soon.

Peter