XS speed-up for Class-C3
Class-C3 is a speed bottleneck in some uses, most notably DBIx::Class.
Reimplementing the expensive part of the algorithm leads to a notable
speed improvement. 

Maintainer: The OpenBSD ports mailing-list <ports@openbsd.org>

WWW: http://search.cpan.org/dist/Class-C3-XS/
