Add patch from Akira TAGOH for fixing test/test-migration.c on Solaris.
Fix build on SunOS.
Fix build on SunOS
Update ipv6calc to 0.94.1, patches by Sebastian Wiedenroth.

Too many changes, see full changelog at:

http://cvs.deepspace6.net/cgi-bin/cvsweb.cgi/ipv6calc/ChangeLog?rev=1.293