Heads up: perl and -current ports tree

[Peter Valchev <pvalchev_(_at_)_sightly_(_dot_)_net>]

As a number of perl modules part of the ports tree are now part of the
base system with perl 5.8.0 imported in -current, those ports have been
disabled.

This is where if you are not tracking -current and update your ports
tree to the HEAD branch you will definitely run into trouble.

If you are tracking -current make sure you update your source tree and
rebuild your system _before_ updating your ports tree.

You've been warned.