HBSD: change MASTER_SITES for fix 55 packages
The HardenedBSD packaging environment does not support the ftp protocol.
Currently in stable13 and current, there are 39 skipped ports entries because of luit (xorg, gdm, gnome3 & more...) and 16 entries because of bmake (dict, dictd, inputplug, mk-configure & more).
It's therefore preferable to change the MASTER_SITES for x11/luit and devel/bmake.