Log Message:
Update ipv6calc to 0.48. Changes:

Major changes:

 Update databases

 General:
  - replace md5 function from openssl with a copy of coreutils (licence issue)
  - add support for IEEE/iab.txt database
 ipv6calc:
  - add support for recognizing 6to4 addresses generated by
     Microsoft OS
 ipv6logconv:
  - add support for recognizing 6to4 addresses generated by
     Microsoft OS
  - add support for ISATAP addresses