Update from version 1.00 to 1.03, discussed in general terms with maintainer.

Pkgsrc changes:
o Canonicalize MASTER_SITES and HOMEPAGE

Upstream changes:

1.03 Fri Mar 21 17:20:00 CET 2008
  - added support for IP_HDRINCL with IPv6 raw sockets (Linux only)
  => in fact, it should have worked before, but it appears to be a regression

1.02 Tue Feb 19 12:11:21 CET 2008
  - bugfix: due to Socket6 update, AF_INET6 definition has changed

1.01 Sun Feb 17 19:08:15 CET 2008
  - update: portability patches for other Unix systems (untested), concerning
            IP_HDRINCL constants and the like
  - update: license string (lc(Artistic)), to make CPANTS happy

(he)