[Heads up] BSD-licensed patch becoming the default RSN.

Hello;

After an exp-run it was found that only two ports presented regressions
with the new BSD-licensed patch derived from Open/DragonFly BSD.

The issue was related to some patch level detection the previous
GNU patch has and the new patch lacks. Otherwise both versions
are basically equivalent. Both ports affected have been fixed to
use the specific patch levels so we can throw the switch now.

The new patch has been rather well tested, and (a derivative) is
already the default on the other BSDs, but you never know so
a new WITH_GNU_PATCH option will be available to aid the
transition.

Enjoy!

Pedro.