Heads up: DFports changes

[Joerg Sonnenberger <joerg@xxxxxxxxxxxxxxxxx>]

Hi all,
next time you update your dfports tree, you must update
/usr/share/mk/bsd.port.mk and /usr/share/mk/bsd.dfport.mk too.
This should fix a lot of the problems various people mentioned
in the past weeks. You should also check the dependencies e.g.
of GTK+, if you haven't rebuild your ports after January 25th.
Otherwise the dependencies recorded are supposedly broken.

Joerg